Scram Japer
The act of attempting to tell a joke and disrupting yourself by either: laughing at your own joke; stuttering; or forgetting where you were going with it.

- This can also be used for comebacks to getting shredded in the group chat.
Work: Did you hear Josh try to say a comeback to Dan's sick burn? He totally Scram Japed it.

Ollie: What a Scram Japer!