A female who has either suffered a detrimental leg injury on one leg that impedes her mobility either from scar tissue or because he is missing one leg. The probability of there being a one-legged greg are exponentially higher in the modern day society. The male counterpart is known as one-legged Greg
Meg:" Fuck! My hamstring locked up, oh dear Sally , please help me!"
Sally:"On it, one-legged Meg!"