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1.
When you perform a sexual favor and do not recieve one in return. The person in question automatically calls "no tag backs" by obstaining from reciprocating your favor.
Mike: "Hey man, did you go home with Jane last night?"
Stan: "Yeah. I went down on her for a bit, but she didn't return the favor."
Mike: "What? She called no tag-backs? That's lame."
Stan: "Pretty much. She said 'thanks,' then went to sleep."
by Seamus McFeeny April 22, 2013