she always tries to qualify herself to me

for example, last night, we were talking about body sizes and i said i prefer curvy. She's not curvy but has a big ass for a white girl but she insisted she's curvy

i know i know, don't shit where you eat...she also punched my dick last night...i could have easily escalated..

having a dry spell at the moment and its so tempting to escalate next time.

How do i proceed the next time she tries to qualify herself to me?