diff --git a/app/activitypub/util.py b/app/activitypub/util.py
index 9aa0bca2..5e51b08b 100644
--- a/app/activitypub/util.py
+++ b/app/activitypub/util.py
@@ -28,7 +28,7 @@ import pytesseract
 from app.utils import get_request, allowlist_html, get_setting, ap_datetime, markdown_to_html, \
     is_image_url, domain_from_url, gibberish, ensure_directory_exists, markdown_to_text, head_request, post_ranking, \
     shorten_string, reply_already_exists, reply_is_just_link_to_gif_reaction, confidence, remove_tracking_from_link, \
-    blocked_phrases, microblog_content_to_title, generate_image_from_video_url, is_video_url
+    blocked_phrases, microblog_content_to_title, generate_image_from_video_url, is_video_url, reply_is_stupid
 
 
 def public_key():
@@ -1348,6 +1348,11 @@ def create_post_reply(activity_log: ActivityPubLog, community: Community, in_rep
                     activity_log.result = 'ignored'
                     return None
 
+                if reply_is_stupid(post_reply.body):
+                    activity_log.exception_message = 'Stupid reply'
+                    activity_log.result = 'ignored'
+                    return None
+
                 db.session.add(post_reply)
                 if not user.bot:
                     post.reply_count += 1
diff --git a/app/post/forms.py b/app/post/forms.py
index dde138d9..085bf92d 100644
--- a/app/post/forms.py
+++ b/app/post/forms.py
@@ -1,13 +1,13 @@
 from flask_wtf import FlaskForm
 from wtforms import TextAreaField, SubmitField, BooleanField, StringField
-from wtforms.validators import DataRequired, Length
+from wtforms.validators import DataRequired, Length, ValidationError
 from flask_babel import _, lazy_gettext as _l
 
 from app.utils import MultiCheckboxField
 
 
 class NewReplyForm(FlaskForm):
-    body = TextAreaField(_l('Body'), render_kw={'placeholder': 'What are your thoughts?', 'rows': 5}, validators={DataRequired(), Length(min=3, max=5000)})
+    body = TextAreaField(_l('Body'), render_kw={'placeholder': 'What are your thoughts?', 'rows': 5}, validators={DataRequired(), Length(min=1, max=5000)})
     notify_author = BooleanField(_l('Notify about replies'))
     submit = SubmitField(_l('Comment'))
 
diff --git a/app/post/routes.py b/app/post/routes.py
index 06132882..a1387743 100644
--- a/app/post/routes.py
+++ b/app/post/routes.py
@@ -26,7 +26,7 @@ from app.utils import get_setting, render_template, allowlist_html, markdown_to_
     request_etag_matches, ip_address, user_ip_banned, instance_banned, can_downvote, can_upvote, post_ranking, \
     reply_already_exists, reply_is_just_link_to_gif_reaction, confidence, moderating_communities, joined_communities, \
     blocked_instances, blocked_domains, community_moderators, blocked_phrases, show_ban_message, recently_upvoted_posts, \
-    recently_downvoted_posts, recently_upvoted_post_replies, recently_downvoted_post_replies
+    recently_downvoted_posts, recently_upvoted_post_replies, recently_downvoted_post_replies, reply_is_stupid
 
 
 def show_post(post_id: int):
@@ -579,6 +579,18 @@ def add_reply(post_id: int, comment_id: int):
             else:
                 return redirect(url_for('post.continue_discussion', post_id=post_id, comment_id=in_reply_to.parent_id))
 
+        if reply_is_stupid(form.body.data):
+            existing_vote = PostReplyVote.query.filter_by(user_id=current_user.id, post_reply_id=in_reply_to.id).first()
+            if existing_vote is None:
+                flash(_('We have upvoted the comment for you.'), 'warning')
+                comment_vote(in_reply_to.id, 'upvote')
+            else:
+                flash(_('You have already upvoted the comment, you do not need to say "this" also.'), 'error')
+            if in_reply_to.depth <= constants.THREAD_CUTOFF_DEPTH:
+                return redirect(url_for('activitypub.post_ap', post_id=post_id))
+            else:
+                return redirect(url_for('post.continue_discussion', post_id=post_id, comment_id=in_reply_to.parent_id))
+
         current_user.last_seen = utcnow()
         current_user.ip_address = ip_address()
         reply = PostReply(user_id=current_user.id, post_id=post.id, parent_id=in_reply_to.id, depth=in_reply_to.depth + 1,
diff --git a/app/utils.py b/app/utils.py
index 1c4e1a8e..e33f0548 100644
--- a/app/utils.py
+++ b/app/utils.py
@@ -589,6 +589,13 @@ def reply_is_just_link_to_gif_reaction(body) -> bool:
         return False
 
 
+def reply_is_stupid(body) -> bool:
+    lower_body = body.lower().strip()
+    if lower_body == 'this' or lower_body == 'this.' or lower_body == 'this!':
+        return True
+    return False
+
+
 def inbox_domain(inbox: str) -> str:
     inbox = inbox.lower()
     if 'https://' in inbox or 'http://' in inbox: