Be Dave Strider.
You are now Dave Strider, and what is that smell?
You have awakened in your room on board the meteor inhabited by yourself and several members of another species. That's really quite normal now, seeing as you have been on said meteor for about three months. Long enough for everyone to get into their own schedule. Long enough for everyone to get bored enough, apparently, to put something very smelly in your bathroom.
Dave: Get up already.
You get up already and, yawning, head for the bathroom. You are about to enter the bathroom when it strikes you - you have no memory of falling asleep on your couch. You distinctly remember lounging on the floor role-playing with Terezi. Oh how nice of her to... put you on the couch, you guess?
You enter the bathroom.
Huh. Everything seems to be in order. Nothing strange lying around...
You brush your teeth and look in the mirror.
What.
The.
Hell.
Your once blond hair is now a shocking red. Red like cherries. Someone dyed your hair, and you are going to find out who. You are going to make them pay for it. You... actually you know who it is. And they are going to pay!
You throw up your god tier hood and head out to go question someone. That someone is Terezi Pyrope.
You find her, along with Karkat, Kanaya, and Rose in the center of the meteor.
"Terezi. What. Did. You. Do. To. My. Hair?" You say, deathly calm.
"WHY H3LLO COOL K1D. WH4T DO YOU M34N?" That scheming little troll... "WHY DON'T YOU SHOW US?" Saying that, she lunges at you and pulls down your hood.
"WHAT THE HELL STRIDER!" Karkat screams.
"Well, I Think I Like It." Says Kanaya.
"Nice look there Dave! I think you should keep it." Rose comments. Rose and Kanaya go back to reading. God, those two...
"Dammit Terezi! Do you have any idea how long it takes for hair dye to get out of my hair?" You are so infuriated!
"R3L4X. 1T'S W4SH4BL3. OR SO TH3 P4CK4G3 S41D..." She smiles, then goes back to drawing. "B3S1D3S, 1T SM3LLS 4M4Z1NG!"
You growl and go back to your room.
Three showers later, and it's still not coming out.
Five, and you swear it's brighter.
You finally give up at about seventeen - you've lost count long ago. You ignore the snickers as you walk down the hall.