Would you rather...
- For a year: be dressed only in pink or be dressed only in filthy old clothes
Only in pink, since I really dislike dirty or smelly Clothes
- Drink someone else's pee or suck someone else's blood
Drink someone elses Pee! I could never drink someone elses blood. Gross!
- Not wash your hair for a week or not wash your feet for a month
Both are bad, but I would take the feet, just use lots of deodorants...so hopefully nobody would smell it.
- Take a bath in cum or take a bath in piss
Thats a tough decision!...
I think I would take Cum, because it doesnt smell and itches.
- For 2 hours: Be in mummification bondage or be in suspension bondage
Suspension Bondage 
- For a year: only be allowed to wear high heels or only be allowed to go barefoot
Only be allowed Barefoot. I saw some of these Wildlife guys do it, and they really enjoyed it! I think it would feel nice.
- Girls: fuck an ugly and small guy or get fucked by a fucking machine
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- Guys: fuck an ugly girl or fuck a beautiful life-like sex doll
Ugly girl (Ugly is always relative tho), since there is nothing better than the human interaction in sex.
- Do one dare that goes against most of your limits or don't do any dare again for a year (you can't decide which limits)
1 Year without Dares, Limits are called that for a reason
- Spend 24 hours blindfolded in a dark and silent toilet or spend a week in your house with loud porn playing continuously
I think 24 hours in a dark and silent toilet, The porn would get annoying at some point.
- For 10 minutes: have someone suck on your nose or suck on your ear
Ear I guess, never thought of something like this
- Sleep naked on the floor without a blanket or sleep outside in the dog house with a blanket
Naked on the floor without a blanket. Been there, done that !