Turn the aerator housing counterclockwise and remove it from the faucet. Pull the O-ring off the tip of the faucet spout with your finger. The O-ring prevents leaking between the housing and the faucet. Set the O-ring in a safe place until you are ready to reinstall the housing.
After that, they are referred to as yearlings or stirks if between one and two years of age. A castrated male is called a steer in the United States; older steers are often called bullocks in other parts of the world but in North America this term refers to a young bull.
calÂ·low. adj. Lacking adult maturity or experience; immature: a callow young man. [Middle English.allow. adjective inexperienced, juvenile, naive, immature, raw, untried, green, unsophisticated, puerile, guileless, jejune, unfledged Although he's 25, he still behaves like a callow youth in some ways.