(noun, verb) Also referred to as dvado, when five penises are in one woman simultaneously. Most traditionally this is achieved through two in the vagina, one in the anus, and two in the mouth. In verb form it is the act of performing said formation.
Mona Lisa smiled shyly after being pentacoxed.

Derek, Denny, Damien, Dante, and Dustin had a great time with Leslie at the pentacox last night.
by DoctorTurdWord August 19, 2010
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