n. A heterosexual who seeks kudos through visiting gay bars / clubs / events in a somewhat mistaken belief that the gays throw the best parties... something not always appreciated by certain sections of the homosexualcommunity
'Damn those straightcrashers!' thought Marc and Lawrence, as they waited impatiently in the too-long queue for the portaloos at Manchester Pride
A person whose true sexual orientation is anything other than heterosexual or asexual, and has assimilated to heterosexual cultural norms, mores and folkways. This person may also deal with issues of internalized homophobia.
Jeff is so straightwashed, he only goes to straight clubs even though he wants dick.