Roflcopterable
When something is too funny, and it makes you roflcopter.
"LOL OMG DID YOU SEE LAUREN LAST NIGHT???!!!, IT WAS SOOOO ROFLCOPTERABLE!!"
roflcopterous
Of, like, or tending to induce massive amounts of rofling, especially enough to warrant use of the term 'roflcopter'.
Guys, that was a roflcopterous joke.