When you start laughing at a random memory of humor past.

The worst invention since the A-Bomb.

Used by almost all American comedies which if you listen closely enough you can hear the winding of the laughter going round and round.

If you hear canned laughter dont expect to laugh.

When a person makes a stupid or bad joke whilst everyone is having fun and laughing together, usually resulting in people going like "wtf".

To come face to face with an epiphany moment that results in an instantaneous burst of uncontrollable laughter for a prolonged period of time.

Uncontrollable laughter at an inappropriate time (e.g.: during church). Often, church laughter is subconsciously motivated by the taboo of laughing at the inappropriate time.

Giving laughter when seeing things from two sides.

A stifled laugher often associated with inappropriate non-work related material at work.

The goal of a cubicle laugh is to prevent others from knowing you aren't working hard because if you're laughing you can't possibly be productive.

Breaking from cubicle laugher into genuine laughter causes the prairy dog effect to occur in surrounding cubes as co-workers wonder what could possibly be so funny.