tit-ti-plop. Noun. An example of an onomatopoeia, the noise made by the undersurface of a breast repeatedly flogging the cephalad surface of a female beer gut, such as when a tittipotamus ambulates at normal speeds.
Much to his chagrin, Paul awakened to the sound of a tittiplop; it was then that he realized his wife had turned into a tittipotamus.
When riding the retarded horse, Karen went into status tittiplopicus - tittiplop, tittiplop, tittiplop...
An obese woman with freakishly gigantic breasts who looks way older than her actual age. Often you awake one morning, a frighteningly short time after the wedding, to find yourself in bed beside a tittipotamus, instead of the cute but chubby girl you married. Screams at you when upset, hogs all the covers, and snores like a hibernating Grizzly, thus ensuring that you spend many nights on the couch where you lie awake cursing the boob-fetish that got you caught, for the rest of your miserable life, in the loser trap.
"Jesus, buddy, WTF? Your squeeze turned into a tittipotamus."
"That poor fuck, Mike. Half his salary goes to keeping his tittipotamus in Twinkies and larger and larger sweatpants."
"That's not the sofa - that's my wife!" "Dude, she a tittipotamus!!!"
Origin: when any mammal has died and is on its back, it is "tits up". Things have gone titsup, meaning, the animal/situation has fallen down/gone wrong.