When you fart so hard it creates the loudest noise known to man and fills the whole room with gas.
Person 1: "Remember that time Person 3 caused a nuclear fartsplosion in my bedroom?"
Person 2: "Yeah..that was the craziest one."
Person 3: "HEY, ARE YOU TALKING ABOUT MY FART?!"
When one faps so much their human form ceases to exist in the wake of a concussive force of jizzjuice and meatsauce everywhere like jerking off a bottle of nitroglycerin
Person #1: "hey brah i was on Ninja Girl Rachels site and i had to pull myself away before I fapsploded all over the fuckin place like an IED"
Person #2: "damn man you've got willpower. i lost two brothers and my dog to that site. all died of fapsplosion"
When too many gay men enter a single room, and the sexual tension is so overwhelming that the only way to relieve it is for them to "explode" onto each other.
Person 1: "What happened to this room? Its covered in semen."
Person 2: "Well last night, Cher was visiting and all the guys that came to see her couldn't help themselves."
Person 1: "Oh, so there was a fagsplosion here last night?"