spozeta

Spozeta (Spelling?)
Short for "Supposed to"

"Aw ma, I ain't spozeta be doin' all this!"
"Sounds like somebody has a case of the spozeta's"

make you thicker

He wants to make you thinker by sticking his dick in you repeatedly

Gf I don’t like my ass
Bf I said I can make you thicker