Guffauto 

“Self laugh” (Latin). Reacting to one’s own comment or post with a “haha” or smile emoji indicating recognition of humor. The Joker (character from the Batman universe) is well known for using frequent verbal guffauto by maniacally laughing after making an ominous or threatening statement.

Dude, that joke was so lame I can’t believe you gave it a guffauto!

Guffauto by Squidulus tents March 12, 2022