B.B.H.T.
A harsh way to tell your friend to stop being a stiff and start flirting with someone. It’s like telling them to loosen up and stop being so boring.
B. B. H. T.! You’re acting like you’re at a funeral.
You’re talking to her like you’re her dad. B. B. H. T.! Get a life.
You’re standing there like you’re in a boring class. B. B. H. T.!