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When you get an amazing feeling in your mouth. Eg. An 'orgasm' in the oral area (Mouth)

1. When you're in the shower and you turn your head and the spray brushes your lips. And it tingles.

2. When you eat something that tastes so good you just had an Orgasm in your mouth.
"OMG I just totally had a Mouth Orgasm"
by Itwontletmepickaname March 22, 2006
When something tastes so good, "Its like an orgasm in your mouth"
Chocolate, chocolate, chocolate.
by Elle February 16, 2005