Think Envelope

There is an older SNL making fun of Calista Flockhart where the actress playing Calista says, "I want to fit inside of an envelope." Does anyone know it? I've been trying to find the episode with no luck...

To (jokingly) encourage each other on our cleanse, Donny and I tell each other to "think envelope".

Cleanse update: I've lost over 2.5 libbies (or lbs for those of you who don't watch Glee, the best show on TV).