A fork of Rural Dictionary
trousers that are so short it is unbelievable that anyone would wear them. generally you can see a couple of inches of ankle/the top of a full length sock if they are knee bashers, if not they are ankle bashers.
they are flapping over his socks, what a pear of knee bashers
large amount of muscle grown from the age of around seventeen which can boost male confidence if they have not been well muscled before that age.
16 year old, small, thin, sticklike
17 year old, shirt bursting at the seams as he grows extra muscle, ie, late teen meat