Green’s Dictionary of Slang

a male homosexual.

2002		The-House-of-Love.org ‘Gay Men Names’ 🌐 oofterpa.
2010		(con. mid-20C) W. Ings ‘Trolling the Beat to Working the Soob’ in Int’l Jrnl Lexicog. 23:1 69: Also from prison slang during the middle decades of last century came a range of Pig Latin words including oofterpa (poofter), opsca (police officer) and more abstrusely orkanpa eanba (camp queen).