to dunk the shit out of people, to be a coldass baller who literally slaps people in the forehead while he is shootin and then sticks his nuts in their face when hes dunkin
1) Slang for jamming - to have a jam session - in music or other creative works. Make something out of nothing based on skills, creativity and enthusiasm.
1) They were yammin all night in the studio and came up with some real good newmaterial.
Any time a person talks very passionately and in great detail about a topic, they are yammin'. Chewing with your mouth open is also known as yammin'. In either case, your response to the person doing it should always be to cut them off and tell them to Quit Yammin'!
Gordilia: "I read the greatest Bible verse the other night. It really set me free and moved my soul!"