Contrary to popular belief doche is used to signify the orgasmic awesomeness of any person, place or thing. It is often used as a greeting in conversation to celebrate the moment you meet someone you pwn at life.
It has opposing or unrelated meanings to the word douche or douche bag.
Warning: Do not use this word against severely insecure or suicidal persons.

A long skinny penis, like a pencil dick

really really long donga (preferably 2 metres)which is skinny (about 14mm)that my friends, is a doche.

A complete tool that thinks he is a lot more than he actualy is. most likely has been ejeculated on over thirty times in his life time

This is a Really Nice Thing to say to somone, this usally shows signs of love and affection towards someone you have a crush on. You will typically show signs of affection towards the person by asking them for nudes. it can also mean that u find the person hot.

Kiss my ass / Fuck you

1) German for: "You want to gefucken me, right?

Rhetorical Question in response to someone trying to make fun of you.

Also used to emphasize the stupidity of another person.