The 49-year-old actress, who adopted Louis in 2010, often brought him on the sets of filmmaker Alfonso Cuaron's film in which she and Clooney play astronauts, reported Huffington Post.
The "Speed" star says her son often bonded with Clooney on the sets. If it is a matter of choice, the actress thinks Louis would prefer to spend man time with the "Up in the Air" star.
"My son thinks he's a very cool dude. If there was a choice between me and George and Alfonso, my son will leave to go with George and the guys. He's a boys' boy -- he has to go and talk to the men." Bullock said.
"He asked, 'Where's George and Rande?' I'm like, 'What? I don't know.' He goes, 'I need them.' We went to meet with them and they had man time," she said.