To descibe something disgusting.
"My mums b/f stole the camera from me cause he didn't want me to see the naked pics of my mum....that's so OMFG YEECH!!"
by Fox April 1, 2004
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The area between the anus and the vagina/testicles.
If you think my ball sweat is bad, smell my yeech.
by Peter Pants April 23, 2006
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Greeting used to define extreme shock and astonishment when talking to a friend.
by Fox February 18, 2004
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