a dick holster is a dirty leathery female which one recently dated to hold their male weapon of choice in while looking for that new embroidered model
Nick: What the fuck is she doing here?
Me: I'm just using her as a dick holster while I scavenge the local taverns for a new one.
1. The mouth of a person that displeases you. Insult
2. The mouth of a person that pleases you. complement
1. Steve, shut you filthy dick holster, you talk too much.
2. God, I love it when women put lip gloss on their dick holsters.