A fork of Rural Dictionary
When a girl is working with maximum effort on a dudes dick (his hammer) Hard As A Motherfucker(H-a-m) in order for him to bust or ejaculate.
Male friend was talking to his other male friend...... " Yo dude, i pulled this chick named Madison last night back to my spot off the internet and let me tell you man... shorty was going Ham on the hammer kid! "
like go town on that but better
i hope she go ham on that caramel sauce