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1.
When masturbating into a Kleenex and the left over papers get stuck on your dick, looking like paper mache.
You: I forgot to remove the pieces of Kleenex from my dick..

Girl: Is that paper mache?
by JustRob September 12, 2009
 
2.
The act of spraying your goo all over the paper bag covering an ugly chicks head during sexual relations. Once the jizz has softened the bags wrinkly texture, it is not uncommon to press the bag against the girls face until drying of the manglaze has commenced, thus creating a paper maché of that ugly bitch.
Harv: How did the sex with that butterface go last night?
Jon: That showty was hit, so instead of takin' the bag off her face I just paper maché'd her ass.
by Jon Griz March 01, 2008
 
3.
The act of spraying your goo all over the paper bag covering an ugly chicks head during sexual relations. Once the jizz has softened the bags wrinkly texture, it is not uncommon to press the bag against the girls face until drying of the manglaze has commenced, thus creating a paper maché of that ugly bitch.

Harv: How did the sex with that butterface go last night?
Jon: That showty was hit, so instead of takin' the bag off her face I just paper maché'd her ass.
by Jon Griz February 29, 2008
 
4.
the act of ejaculating on a girl's face then slapping a newspaper to it, resulting in what resembles a 3rd grade art project.
I paper mache'd that sluts face
by chriswalken89 October 19, 2010
 
5.
Wiping one's ass with the last few bits of toilet paper on a roll, often resulting in leftover pieces of toilet paper/shit combination stuck to the ass
I had to paper mache my ass with the last few bits of toilet paper because that's all that was left.
by Court Sullivan September 18, 2006