Something sensational, excellent or cool.
Part of 'what's cracking'.

to sport a boner, fly the sail at full mass, rock hard, etc.

Removing copyright protection from copyrighted software. Commonly used to obtain software without paying for it. Cracking is not by inserting a false or used serial number, but to insert other documents and files into the actual program to make it seem like it was registered by a paying customer, when it actually wasn't.

Another way of saying whats up

also its oftenly used by Kevin Nissanka

a situation, such as a party, where everyone is dancing and or having a good time.

trying to crack. trying to make jokes

Well used Irish phrase that describes someone who is extremely good looking. Often used with positive superlatives.