When Usain Bolt was getting his swerve on in a London nightclub this weekend, rapper Post Malone was RIGHT THERE partying alongside him ... and tells TMZ Sports, "It was awesome!"
Bolt has been on a tear with the ladies this past week -- despite the fact he's got a GF back home in Jamaica -- and Post saw the legend in action at Cirque le Soir club on Monday night.
"He's a ladies man," Malone said.
"Fastest man in the world ... even if the cops were chasing him, he could escape .