Pooptintillion is just a play on words of million, billion, trillion, etc. Its used to overexaggerate or show the ridiculousness in the situation. You can really use any vartion of this word to describe the ridiculous of the amount or time of something.
Farttintillion, Shitassgazzillion, DooDooFartillion are all "examples" of this joke.
I told you like 50 POOPTINTILLION TIMES! To revive me!
This mf has killed me like500 poopfuckinggazillion times bruh.
Somebody is refered to as pooptent if they have the power to control other individuals with the potent smell of their feces. Their powers include but are not limited to driving other people out of the contaminated area, making others (who cannot leave) compliant as they beg them to do sth in order to eliminate the stench, such as open a window, and kill animals and small children by intoxication.
etymology: compositum of the words "poop" and "potent".
noun: pooptence
He is totally pooptent, when I walked by the bathroom the smell literally made me gag and beg him to open a window being down on my knees.
So you think you can kill your cat and get away with it? Oh yeah, you don't know how pooptent I am!