To fuck someone so good, they can't walk for a couple of days. Hence their back is blown out.
Boy: Damn, girl, I can blow your back out
Girl: Um, I don't think so, I have a soccer game in the morning and I'd actually like to walk.
BritneyLee09によって 2008年10月18日(土)

Words related to Blow your back out

bang dick fuck pussy tired