For the next week you are not allowed to take your underwear off to use the toilet. You are only allowed to change your underwear after you cum 3 times in them.

As soon as you read this post, cum into your underwear. Wear them until tomorrow. You need to keep wearing your underwear until the following day for this dare.

Now, every day this week when you get up, flip a coin.

If it's heads and you're already wearing cummed-in underwear, keep wearing those for the day.
If it's heads, and you're not wearing cummed-in underwear, cum in it and wear that for the day.
If it's tails, you may change into a new pair of underwear.

For a week, you will cum in your underwear everynight and after that, each time, you will eat the cum and put back on your underwear

For the next 48 hours wear a pair of panties that you are not allowed to remove, not even to use the toilet. Try to cum 4 times in your panties during these 48 hours.

For a week, you have to keep the same pair of boxers.

Then, throw a dice. The result is X.
During this week, you have to cum X times in your pair of boxers.

At the end of the week, throw again the dice. The result is Y.
During this last day, you have to cum Y times in your pair of boxers.

When done, throw again the dice. The result is Z.
You have to wear your pair of boxers on your head for Z hours.

Take two pairs of underwear for this dare. For a week you change between the two every morning. No washing.

Every night before going to sleep decide between cumming in the underwear you are currently wearing, or the one you are going to wear the next morning.

Each morning after changing your underwear, toss a coin,

Heads: cum in the underwear from last night
Tails: cum in the one you are currently wearing

For the next week you are to cum in the front of the underwear you are wearing for the day. Next time you need to pee you will dribble some in the front and back of your underwear and cum in the back before you can fully pee. Alternate between front and back each time you need to pee. You may use a clean pair daily or the same one for the week, however if you wear the same underwear for over 24 hours you are not allowed to change for the week.

Before going to bed cum in a clean pair of underwear of your choice. Let them dry over night and wear them the next day.

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Cum in your undies somewhere that isn't your home.

Wear the same pair of panties for the next 3 days.
Cum in them every morning when you wake up.

Wear the same pair of panties until you have had 15 ruined orgasms and 5 full orgasms in them

You must ruin an orgasm into every pair of underwear you own before being able to cum normally.

Attach the back of your underwear to something like a door knob. Them, lower yourself to the hardest wedgie you can and reach inside to masturbate. You can only jerk off while on the hard wedgie. Then, cum into the wedged undies and keep the sticky wedgie for 10 more minutes.

The next 6 times you cum must be inside your underwear. You cannot put on any other pairs of underwear until the 6th load has gone into that first pair.