Things to Do with "sneak"
1) At Midnight, sneak into your neighbor's yard, hide in the bushes, and start squeaking a rubber ducky.
3) If you have makeup, just go crazy and make yourself look like Joker. Then sneak up on someone and tap them on the back.
4) While your family is asleep, sneak into the kitchen and switch the sugar and the salt. See what happens at breakfast next morning.