A chesterman is performed in the doggy style position when a male penetrates another male who is on all fours from behind. The act of performing a chesterman is when the giver ejaculates into his male partner and then precedes to seal his mouth around the anus of his partner on all fours, sucking out his own cum and his partners faeces. The chesterman is an act between two homosexual males and cannot be performed by/with a woman.