A term derived from the free game "Dwarf Fortress," explained on the official Wiki of the game that it is the slowing down of the game's frames per second rate as a result of having too many cats on one screen, usually avoided by not taking more than a single cat on your adventure. Catsplosions have also been known to be harmful to the dwarves in the gameplay if you try to reduce the cat population.
A small Catsplosion had occurred in Will's fortress, and when he tried to control it, the dwarves of his fortress became sad and threw tantrums, destroying property and causing an amusing, yet painful-to-watch chain of tantrums that inevitably led to the fortress' demise.
Carl was jerking off to some porn when he finally cummed. A hot load of jizz coated everything in front of him, a cumsplosion. He didn’t stop though. The stream of hot jizz didn’t look like it was about to stop. The stream kept coming. Carl tried to stop it by holding his dick tight but it hurt like hell. He stepped out of his chair and it still rushed out. The dripping stream didn’t stop. He tried putting on pants but filled up with cum. He went out naked. He bravely stepped out of his house to try and get help but then the door locked behind him. His cock dripped with cum faster and faster. His raging boner was rock hard. He then saw his crush walking toward him.
"Richard pumped the accordian on his penis, until he enjoyed a fine CUMSPLOSION. He was so rubber-legged he fell on the icy walk as he left. Best Christmas ever.
A thing that happenswhen you have an erect penis. They can be small or fucking huge. When I say huge I mean 15 gallons of hot juicy semen. Enough to fill up a bathtub.
Holy shit! That was a mega cumsplosion!, ugh, no don- *gasps for air*, dont pull out, I like your sweet sticky hot juicy spicy tangy cum.