i'll be on in five - A lie your friends tell to get out of joining you, like they

A lie your friends tell to get out of joining you, like they’re actually doing something important, but it’s just watching cat videos

'I'll be on in five', he was watching a cat fall off a couch.

'I'll be on in five', he said he was doing homework, but it was just a lie.

'I'll be on in five', he came in 20 minutes later, still in pajamas.