1 definition by Johnny Jiggles
a piercing through the head of a man's penis, especially if the stud's location is especially distal eg the area a circumcision would have removed
"hey Jill, i heard Tommy got an emerald circumstud"
"probably to make his baby-penis easier to find"
"probably to make his baby-penis easier to find"
by Johnny Jiggles February 20, 2009