Beck uses this terminology in the lyrics of "hell yes". I believe it means to change vinyl records on turntables when
DJing. "Cleaning the floor" could also be a DJ-centric piece of terminology. "My beat is correct" definitely relates to DJing, hence my belief that "
Switching my plates" is another way of relating the
kinetic act of playing vinyl records on two turntables.
"
Hell yes...
now I'm
calling you out, I'm switching my plates...
Hell yes...
now I'm
cleaning the floor, my beat is correct"