usually referring to tight underwear worn by a well hung male
his underwear was so tight i think hes a plumb smuggler
โดย mr.m dog 23 กันยายน 2009
A pair of pants worn by a male that are extremely tight.
Dude, nice Plumb Smugglers. I can count your pubes through those things.
โดย The Hutt 25 สิงหาคม 2010