Most of the time, you don't have to walk the walk though. With the sports example, you can drop being great at it while talking to people at a bar or dinner par

Most of the time, you don't have to walk the walk though. With the sports example, you can drop being great at it while talking to people at a bar or dinner party or online as you can't be asked to prove it right then and there. If you claim to be a good singer, you can pretty much do that at any time so that's a bit harder.