For the life of me, I don't understand why people think you are weird. Dang normals.
I know this will sound crazy - but we bring SPAM cans and hide them in our hosts house. Behind a knick knack, under the bathroom sink, in the freezer.
We all have our little fun - but, I like your trick.
One party - in College - we decorated the Xmas tree with the (grey) underwear of our host while he was flirting heavily in the other room.
We should have a thread on dirty tricks we've pulled.
;-)
DD