What does “check someone out” mean? Is this phrase only used in flirting situations?
Native speaker’s answer
Rebecca
To "check someone out" means to look over a person's physical appearance, to see how attractive they are. Thus, if you are checking someone out, you are likely looking at them because you are attracted to them. Ex: From the moment she walked into the room, all the guys started checking her out. Ex: Hey look, that person is checking you out!