on the floor

prepositional phrase2

1. •
   (figurative) Very low.

   • I'm up and jaws are on the floor Lovers in the bathroom and a line outside the door — 2020
2. •
   (US) Mounted on the floor of an automobile.

   • I got a '69 Chevy with a 396/Fuelie heads and a Hurst on the floor.