Queso mustache 

When a male ejaculates onto their partner's face (generally after oral sex) and the semen lands largely on the upper lip. The ejaculatee then puts on a sombrero and yells "Dios mio!" and restrains their partner until the semen dries, creating a queso mustache.

Last night, my wife ended up with a textbook queso mustache after a blowjob.

Queso mustache by atleastjake December 20, 2015