What is Jgc?
A super-awesome replacement acronym meaning 'Jolly Good Chuckle' which exists on a much higher level than the lowly LOL, ROFLand LMAO.
Hero A: *LOL FGGT McNGGT LOLOL0LROFL LMAO THAT'S WHAT SHE SAID!!SIX!*
Hero B: JGC
*...* - indicating irony.
See lol, rofl, lmao, fggt