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1.
When someone has to leave a group of people to go take a shit.
Alyssa: I will be right back, I have to go change.
Me: Where did Alyssa go?
Other: She said she had to go change about 20 min ago.
Me: Changing must mean "Shitting"
by TerryD September 08, 2010
 
2.
Synonym for masturbation.
Go away, I'm...changing.
by w00sa July 22, 2006