1. A quick and witty negative response to a potential suitors advances. Typically given at a bar, party, or any popular hangout spot of single people.
2. A negative rebuttal to a "Pick-up line" which gives the pick up artist a clear cut sign that their attempts to woo a mate will be unsuccessful. Typically results in lower self-esteem on the part of the advancer.
Guy 1: I don't understand, I gave her my best Pick-Up line
Guy 2: What did you say?
Guy 1: "Your place or mine?"
Guy 2: How'd that go for ya?
Guy 1: She said "Both, you go to yours, and I'll go to mine"
Guy 2: Damn man, that's your Pack-Up line, time to pack up and find a new girl, because that one isn't going anywhere.