slang terms

we had a huge convo at my job about slang terms used today..

2 i never heard of are..

'catch a rap'--meaning got someones number

&

'a jump off'-- meaning a one nite stand

has any1 heard of these or know anymore i can add to my list of new found slang :)

here's one that the guys at work always use 'rub one out'...meaning ummm choking the chicken...it took me a loooong time to figure it out. of course i never wanted to ask and look like a nerd.