a hott girl that you are willing to give a slam to. (Slam of course being sex.)
"Yo Mike, did you see that chick?"
"Yea man, she was definitely a slam box."
When I took off her panties, her slam box was staring me right in the face.
To have one's box slammed. To have sex. To be fucked.
Damn that girl is dressed like a slut, she wants her box slammed.
Wow, girl i just want to slam your box.
I got a phone call from my mom while i was slamming her box.