Butt plug
Something you shove up your tight ass hole to stretch it out, to prepare it for my big cock baby. Like a carrot or a cucumber. Once I shoved a whole bag of jelly beans up my ass
Example:
Last night my uncle John shoved a marker up my ass to stretch it out, like a butt plug, for his big ass cock
Last night my uncle John shoved a marker up my ass to stretch it out, like a butt plug, for his big ass cock