The terms plumber's crack (Canadian, Australian and American English), "cofrinho" (Brazilian Portuguese), and builder's bum (British English) refer to the exposure of male buttock cleavage, especially on occasions of careless bending over.
Plumbers Putty is a substance that that can be molded and shaped and is used to create a watertight seal around a faucet or drain pip. Plumber's putty is sold at at hardware and DIY centers around the country and is considered one of the most basic plumbing tools.
A Pressure Balance Valve is a shower mixing valve that automatically regulates the balance between incoming hot and cold water supplies by immediately controlling the fluctuations in pressure. As a result,the water temperature remains constant, though the outlet pressure may drop a litlle. Also known as an anti-scald valve.
In the plumbing trade with pushfit connectors are meant a type of plumbing connector which just push onto the pipework rather than using compression or capillary connectors - they can be made of plastic but are suitable for both hot and cold water - sometimes referred to as 'Speedfit connectors' (one of the early brands). Available as straight, 'T', elbow and other configurations.