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1.
A means by which a classy lady can maintain her sexual dignity by refraining from penile penetration yet still partaking in all other sexual activities.
'So did you shag that fitty that looks a bit like Duncan from blue?'
'No, we did everything but'
by niahbois May 14, 2010
 
2.
Doing everything sexual EXCEPT sexual intercourse.
Valerie: "I'm getting together with this guy tonight to do an Everything But!"

Amanda: "No way!!!!"
by Carlyia July 10, 2008
 
3.
Engaging in sexual experiences with another person and doing everything but penetration. Everything: making out, heavy petting, oral sex, etc.
Omg Sandra... me and Bobby did everything but last night. I told him that I'd go all the way next weekend.
by thesexdr208 March 06, 2012