now I think it worked

src/plugins/meme.py

@@ -9,8 +9,8 @@ def meme(db, message):
         good = "I love you."
         bad = "fuck off"
 
-        if diceroll = 20
+        if diceroll = 20:
             return RollbotResponse(message, txt=good)
 
-        else
+        else:
             return RollbotResponse(message, txt=bad)