Hooker nails, is a term given to someone, typically a female who recently had her nails done, and got them longer than most call socially correct length. This term however is misguided; for those who choose that life style (prostitution) generally have short nails because of the hard life on the streets, the general "jobs" they partake in. But the term is still widely use among other girls, no real origin, except classroom chatter.
-Did you see Marie's hooker nails?
--No, what do you mean?
-You know, those long nails, that are like an inch long or sometimes longer.
--Oh! Hooker nails! I get it?