look up anything, like your first name:
1. catch a body
to have murdered someone
"Niggaz be runnin through the block shootin
Time to start the revolution, catch a body head for Houston..." - Nas

see, he's talking about killing someone and then leaving to houston to evade the consequences....
2. catch a body
to have sex with a girl
"You get no puss, when are you gonna catch a body."
rss and gcal