J is for jump rope! stick a jump rope as far up there as you can!

K is for Keester!
Go to the park with a few of your toys only wear a thin T-Shirt and a super short mini Skirt. Wait for there only to be a few people around. Then strip naked! (Make sure you got a fairly good place to hide You want to see the people but hopefully have them not see you XD) Next put those toys into your keester (butt) and play with yourself with them untill you have an orgasm. or 20 minutes have gone by. once either of those events have happened leave the current toy in your ass and walk/drive home. Once you are home you can remove the toy! :D

L is for likes.
Create a dare involving all of your likes and do it.

M is for masterbation! You must masturbate 5 times daily for a week. you don't have to cum every time though.

N is for Necklace

Take the biggest necklace you have. Put in in your ass tomorrow morning and carry it with you the whole day.

O is for old. Insert something that is older than you.

P is for pain flick your balls 20 times. (((FAIL)))

that has nothing to do with inserting...

sorry wrong tod topic well her it is then:
P is for pain. stick someting up your ass/pussy use icyhot or toothpaste as lube

Q is for Quanity. Insert and many markers up your ass as you can.

R is for random! Close your eyes, spin around, and touch and object! First object you touch goes up there for 10 minutes(if you are able to, otherwise, do it again until you find an object.

S is for spice! Shape a piece go ginger root into the shape of a suppository. Insert it deep into your ass. You may expel it only after 15 minutes have elapsed.

t is for toilet paper. shove a bunch of toilet paper up there for 20 minutes

u is for um.... next time you poop remove it from the toilet and shove it back up your butt for 1 hour

This is for littlevirginboii, since doubledubsbo didn't give a dare with the letter u, just some random dare:
U is for underwear! Take a pair of someone else's underwear, put it up your anus as much as you can, and leave it for 10 minutes then slowly pull it out and put it back in the drawer you took it from, without cleaning it in any way.