Double Finger Mustache
When an individual licks the tip of their two fingers, straightens their mustache with said fingers and proceeds to insert these fingers inside of a vagina while licking the clitoris.
I heard that Kevin gave Susie the old double finger mustache.
double mustache
When one possesses both a traditional mustache and a unibrow at the same time (typically seen in Spanish populations and feminists).
"Look at Becky with her equality sign, shes sporting a double mustache"