What is Roflcore?
1.
1) A way of saying rofl! (rolling on floor laughing) but using a spoken 'core' instead of an exclaimation point.
2) Indicates hardcore rofl-ing, used when a lol/LOL/ordinary 'rofl' is just not enough.
'and then they gave me my gummi bears, and my pants, and i don't think I'm allowed inside city cinema anymore..'
'roflcore!'
See