GAMP (gynandromorphophilia) is a scientific term denoting attraction to GAMs (gynandromorphs). That is to say, GAMPs are men or women who feel sexually aroused by feminized men (who are themselves most often trans-identified males who've undergone some form of medical gender transition).

When some little bitchboy is acting like a little tiny pee pee poo poo baby and messing up the group plans.

Gamp is an old-fashioned English word for an umbrella which derives from a Charles Dickens character called Mrs Gamp who used to carry an umbrella around (possibly in Martin Chuzzlewit).

Not in use today, but references can be found to it in at least 2 George Formby songs "you're everything to me" and "under that blasted oak tree".

An acronym that stands for Gay Asian Midget Porn

Gay anime/asian/african midget porn

An amputee or otherwise physically challenged prostitute. A combination of the words "gimp" and "tramp".

being both camp and gay