It doesn't matters why they are tall and skinny be it their Genes or time spent on a
stretching machine while being tortured by Elves from the Spooky Wood down Hobbs Lane.
If they are too tall AND too skinny, they may be referred to as a Lanky
Streak of Piss.
A current example is the England
Footballer Mr Crouch whose name indicates what he does a lot of.