It's been quite a while since I last watched Rockin' in the Rockies
, but I distinctly remember Larry and Curly pulling that gag on the bartender early in the film. (IIRC, it was actually before
they meet Moe in the story, but I won't swear to that.)
I've added it to the routine, Hammond, and I modified the routines description while I was at it.
You get another pie to the face!