The place where you umbilical cord used to plug in when you were a little fetus. That's how you got nutrition from Mom.

When they snipped it off, it made an ugly scab, on your belly whuch healed and left a little knob about the size of a button. If they didn't trim it enough, it's an outie, and if they trimmed it weel it's an innie.

The belly button collects little balls of fuzz called nerds.

If you poke somone in the belly buttton, they might laugh like the Pillsbury dough boy.

Laughing so hard your stomach starts to hurt.
To laugh uncontrollably till the point it causes pain.
Laughing pains.

Laughing so hard your stomach starts to hurt.
To laugh uncontrollably till the point it causes pain.
Laughing pains.
Something that is funny.

The term 'bobby-laugh' denotes a laugh of excessive measure and volume, deemed by the audience, given the stimulus that prompted the laugh.

A 'Bobby-laugh' nearly always follows a comment that is either mediocre in its comical value, or not funny at all. What seperates the laugh from a standard laugh is therefore defined post-joke; upon review of whether the magnitude of the laugh coincides with the comical level of the 'joke'.

The laugh is usually short, loud and abrupt and bares little justification.
This laugh is not of sarcastic tone and is usually intended as genuine by the laugher.
The enthusiasm and the magnitude, as measured by volume and abruptness, is often linked to the degree of compliance and agreeableness that the laugher wishes to demonsrate.

Genuine Belly Laugh, Can be instead of LOL in times of extreme Hilarity

v: When you rip a hard belly laugh so hard that you snort through your nose. The best ones are when you rip snort, causing someone else to crank a hard belly laugh leading to a rip snort. this can continue until someone farts or (best of all) shits her pants. Women are the best rip snorters for some unknown reason.

Belly Laugh