2. (v) To rip a hot beat lyrically; to ride a beat/track; to put it down lyrically. The concept is that a beat or track is so hot, you got to get on it, same thought process as definition 1 but in terms of rapping over a hot beat.
See freak dat
Guy 2: Fo sho! I'd freek dat, that gul is fine!
2. "Yo, that beat is ill, let me freek dat."
"Yo, son, I'm bout to freek dat beat, watch out!"