Having watched this amateurish comedy recently, I was shocked at some of the other comments here. While "The Gay Deceivers" is as good an indication of how gays were portrayed in the late 60's (i.e. swishy, nellie queens and leather butches), it's no better than a curio - certainly not required viewing for anyone other than gay cinema completists.
There's very little here that's truly funny, since the direction and editing is so poor that basic comic timing goes out the window. Michael Greer has his first appearance as the queeny neighbor of the two hetero boys pretending to be gay to avoid the Draft. It became a typical role for him.
What's amazing is how long it took for Hollywood to graduate (even in part) from films like this, "Partners," and "A Different Story" to something approximating reality among gay people. And directors/writers still get it wrong more often than right.