Ping pong back and forth faster.

FORBES: Connect

This will result in "parliamentary ping-pong", meaning the Growth and Infrastructure Bill goes back and forth between the two Houses until a resolution is reached.

BBC: Peers reject workplace rights-for-shares scheme

Where differences of opinion between the two chambers prove difficult to reconcile, a bout of parliamentary ping-pong may ensue - so called because a bill bounces back and forth between the Commons and the Lords until both chambers approve the final wording.

BBC: Democracy Live site links