Sandra Bullock made pact with George Clooney to stop his pranks

London: Sandra Bullock made sure that her co-star George Clooney curbed his pranks while shooting for the upcoming film `Gravity`. `The Proposal` star stated that she and Clooney had a settlement that he won`t practise his notorious `practical jokes` on the sets as it was not the right place to prank, the Daily Express reported.The 48-year-old actress revealed that the film - which is about astronauts attempting to return to Earth after debris crashed into their space shuttle - was so tough that it left no time for pranks and jokes as they were hanging from a scaffold with 12 wires, rigged up all day. ANI