Crossword puzzle clue "you can tell a lot about someone they use abbreviations peter serafinowicz"

"You can tell a lot about someone ___ they use abbreviations": Peter Serafinowicz

Someone who can help you become someone you're not?

Street corner things that tell you you can't park here, if you should stop, where to go, etc.

What you say to tell someone you're out of bed: 2 wds.

"Being a ___ fan is like lending someone a lot of money and you just know that you'll never get paid back." (John Oliver)

Device that can tell if someone's recently vacationed in Hawaii?

They can tell you how it's going to end

Like someone who can't wait to binge-watch "Mad Men" when someone invites them to Netflix and chill