1)The Infamous Pepe Lopez is a man renowned for his skill at employing his trademark move, normally done at the end of sex.
2)The "Pepe Lopez" is when the male is fudge plugging a girl, and when he is ready to finish, he pulls out, inserts his finger into the poo lodge, withdraws with a stinky brown film covering his thumb. He then ,lovingly , smears a mustache on his partners upper lip, oftentimes he is seen running out of the partners living quarters, nude, and being chased by a pissed, naked, woman with a fairly large mexican mustache, otherwise known as ... a Pepe Lopez.
"whoa, its PepeLopez, run dude, shes gonna catch you!!!"
The Pepe Lopez is a distant cousin of the dirty sanchez. After completing the act of coitus, the man wipes the tip of his penis on his partners upper lip, leaving a white glazed moustache that resembles Pepe Lopez.
Other entries which purport to be Pepe Lopez but involve poo are actually dirty sanchez's.