Rooftop boner
When you get so extremely excited that your boner actually extends, breaks through the ceiling and hits the roof of the current facility you are in. If this is currently infeasible, it may be simpler to scream it to the heavens.
My parents were out of the house, I got the candles lit, and she said she would be over in ten. Can't even contain my rooftop boner right now...
ROOFTOP BONER!!!
ROOFTOP BONER!!!