Running Gags

Phrases and stunts that repeatededly come up in the episodes.

Stunts:
 * Shot of a front door while a character abruptly exits with someone screaming "Get out!"
 * Walking up the stairs.

Phrases:
 * Bazinga. - Sheldon
 * In what universe... - Multiple users.
 * My mother had me tested. - SHeldon
 * Oh God! - Penny