Brown Musket describes a sexual act which typically involves at least one male. It occurs when an individual takes a dab of excrement onto their finger and then inserts it into the pee-hole of an erect partner. The pinky is most often used, but more advanced 'Brown Muskateers' often graduate to the use of the larger digits when a willing partner is able to withstand what is usually considered an intensely painful experience. The source of the fecal matter used is irrelevant but most often belongs to one of the involved participants. Extra points are earned the heavier a musket is loaded. Common side effects include urinary tract infections, as well as pissing shit.
Mary was mildly disgusted, but not altogether surprised when Ian's dick tasted like shit after she delicately performed her first Brown Musket on him.
Lean defined muscles as the result of hard labour, as opposed to the the larger "pumped up" muscular look which results from going to the gym or intense body building.
A gummy musket is when a person who chews a lot of gum (Nicorette,Dentine,etc) routinely swallows it rather than spit it out when spent. Subsequent bowel movements often result in the gum getting matted in the ass hair as a result of wiping. Removal of embedded gum is difficult and painful.
I jerked out a gigantic tuft of ass hair on account of a gummymusket.
The act a girl performs when the guys dicks not long enough but she wants to get pregnant, so she uses a dildo to force the cum inside her, like a musket.