Pranks? Stories of pranks you/your significant other have pulled off

Title says it all.

A long back my gf was disturbed by the Buffalo Bill tuck scene. She couldn't stand it. She used to love the song "good bye horses" too.

One night I left the door unlocked and was ready to get my bathrobe and tuck game on.

When she saw the dark condo with the music blasting, she got really scared, legit scared. Couldn't even finish the prank