10 conkers for you

panties for a week

Put all your other clean underwear down your undies.

a vibrating bullet or vibrator down ur panties the next time you go out :)

Shove a banana nice and tight down your pants and then wedgie it a little and walk like that allday

Lots and lots of rocks for 24 hours.

your phone whenever your not using it for a week

3 pieces of crumpled up paper
Don't make mine too messy and nothing that you'll see through my pants. Nothing that'll leak through or anything. Make it something no one will know about

By definition, there's already no messy things in this thread :P

Put as many socks down your pants that you can without it being obvious. Keep them in for a week.

Make mine a little bit obvious so people might notice, please! :3

put a water bottle in your underwear between your legs for 24 hours. take out as much water as you dare. the emptier the bottle, the louder it will be as you move around.

Shove a tray of ice down your underwear
make mine painful please

M/22

All of the Legos (or something equally pointy) you can find for 24 hours.

Bumping this thread! :3

Your phone on vibrate.

Put 10 pantyhose in front and 10 in back of your pantie keep them 2 days and 2 night