'Sieve' is also a bit of
ice hockey slang used to describe a
goalie who allows a lot of "soft" (easily stopped in most circumstances) goals. The term is rather
derogatory, and should be reserved for opposing goaltenders, although
this isn't always the case.
The term is best used when taunting a goaltender. The most common forms of usage are: "Hey Cechmanek, you're a fucking sieve who couldn't keep a beach ball out of the net!" or "Sieve! Sieve! Sieve! Sieve! Sieve! (repeat ad nauseam)" The latter of the two examples is most effective after a goaltender lets in a weak goal, especially when chanted by a whole section of drunken fans.
The term is thought to have originated from the saying "like water through a sieve," but its exact etymology likely will remain a mystery.