The Mexican cartels sometimes use a cornerback (US born citizen)to traffic narcotics into America. Corners or cornerbacks are useful dealers because they live in the USA.
A male who suddenly approaches unsuspecting women in a public places to follow and observe them in order to achieve self satisfaction. Often wears sunglasses and pretends to talk on telephone as not to be caught.
Greg stopped working so he could cootergawk several women walking to the bathroom.