BAAF is an interchangeable word, used to describe something that is really sweet. The word BAAF is used in conjunction with a spank like hand motion in front of the genital region with the right hand. The word can also be used to describe getting drunk, giving a sweet facial, etc.
"This new song by (insert artist here) is BAAAF"
"A girl was giving me dome and I went BAAAF on her face"
"Let's go BAAAF tonight!"