the panties comin off, off, uh
When something is so good that the panties have to come off. From Nicki Minaj's Super Bass song.
Michael: Wow, this sandwich is delicious!
John: Really? No way!
Michael: Yeah, the panties comin off, off, uh.
John: Really? No way!
Michael: Yeah, the panties comin off, off, uh.