A puddle found on the ground that consists of snot, saliva, spilled drinks and/or other substances (beverages) coming from the nose caused by a laughing group of people. These laughing people are usually in a circle-like formation in order to create a round puddle.

Laughing in a choking way

Feeling forced to laugh as though at gunpoint. Usually caused by peer pressure or fear.

Sometimes you can't laugh when you know something was hilarious. Or laughing on the inside.

The involuntary action of laughing while asleep. Not to be confused with dreams of laughing, but rather you laugh in real life while still being unconscious.

This is much similar to sleep walking.

When someone laughs in a virtual media, say the Internet (IRC, Forums, MSN, AIM, etc...), they are using a virtual laughter. How can people laugh virtually? Using a series of acronyms.

Probably, the first way of virtually laughing was LOL (Laughing Out Loud). Because saying LOL all the time was a bit stupid, someone made up LMAO and ROFL. These two have opened a whole new way for virtually laughing, since lots of combinations can be made from these two, from ROFLMAO to the incredible l33t ROFLLMAONHAHAANDWSTC.

Note: Whoever says this isn't really doing the things they say, probably they aren't even laughing at all!

See also ROFFLMFAOOLTTFM, ROFFMGRUTA, ROFFGMBSAO, ROFCMAO, and even more...

laugh to tears