Green’s Dictionary of Slang

scammered adj.2

[? fig. use of scam v. (1), the image of deception]

(US prison) homosexual.

[US]A.J. Pollock Und. Speaks n.p.: Scammered, a male sexual pervert.
[US]G. Legman ‘Lang. of Homosexuality’ Appendix VII in Henry Sex Variants.
[US]Guild Dict. Homosexual Terms 40: scammered (adj.): Homosexual. (Criminal slang.).
[US]B. Rodgers Queens’ Vernacular.