Slip an egg into the bottom of a buddy\’s sleeping bag just for grins.

Put packing bubbles (you know that stuff that keeps things from breaking that\’s fun to stomp on) under the toilet seat. Bavoom!

Try some Alka Seltzer in the toilet.

While your friend is sleeping carefully wedge marshmallows between each of their toes.

Everyone agrees to tell the host that they\’ve been talking in their sleep. Agree on what was said. How about \"I have a crush on the cafeteria lady?\"

Stick toothpaste or shaving cream on their fingers while they sleep. Then tickle their nose.

When you have a friend (or a couple of friends) over, put ice down the pants of the first one that falls asleep. Or, if they are not wearing pants to bed, then put the ice down their shirt.
When your friend falls asleep, take his/her underwear from their bag, then stick it in cold water, and then throw it in the freezer. Then, in the morning just before they wake up, stick the now frozen underwear back in their bag!! Gee, won\’t they have a scare when they stick on their underwear!!
A hidden mini tape recorder (whoops how did that get there?) would be handy when telling secrets

Remove your friend\’s shirt and socks. Now take some mollasses or corn syrup (any sticky liquid), and use a paintbrush to paint points were skin touches skin with the sticky liquid (in between toes, armpits, in between fingers, down their pants, in the belly button, good for bottm of feet if you put socks back on afterwards). For a real mess, make a pile of the liquid right on your friend\’s chest, then put his hands on it and tickle his face....