(unfortunate then, that there is a chain of fish and Chip resturants in the North east of England under the that name).
Boy oh boy, its a hot one! My clems aint half sweaty.
Generic adjective used to denote male or female sexual body parts, usually the testicles.
Bugger me, it's hot enough in here to boil yer clems!
Stop whining or I'll kick you in the clems.