Basically don't have Jimmy Fallon in the sketch.
Debbie Downer (2004) - Entire Cast
Source: hulu.com
Jeffreys (2001) - Will Ferrel, Sean Hayes, Horatio Sanz and Jimmy Fallon
crack up begins at 2:22
Source: hulu.com
Stefon's Weekend Updates (2012-present) -Bill Hader
The reason behind Bill Hader's continuous crack-ups as Stefon is because they change the cue cards right before he goes on so he's reading each joke for the first time.
Source: hulu.com
Love-ahs in the Hot Tub (2001) - Entire Cast
crack up begins at 5:04
Source: hulu.com
