The act of completing a blow job by gargling the semen. Often seen as a sign of respect for the wasted sperm being sacrificed for her pleasure.
Sally's a really great chick. She gave me a suck and gargle out of respect for my swimmers.
When your in the act of love licking her out and she's on her period and she start saying bleeding but she's about to cum so you keep licking and your mouth gets flooded with blood
She gave me a gargled bloodbath
The idea of grabbing someone's cock (preferably a strangers) filling your mouth with a mixture of salt, pepper and chili flakes and proceeding to gargle their cock viciously until they bust a nut.
Bro I just did the "Dirty Cock Gargle" and I feel great!