What is Beat Those?
1.
generally, to have sex, and usually in an extremely energetic/aggressive way.
"Oh, her? I already beat those last week man."
2.
To make love, or fuck, with ferocity and determination.
Hey man, did u beat those last night?
Hey baby, wanna beat those?
See
3.
To engage in aggressive copulation, most often using multiple orifices.
"Hey, when you gonna let me beat those?!"