Historical, predating LGBTQ sexual identities & contemporary community; archaic slang.
From the slang word trade.
A alpha masculine heterosexual identified blue collar man who disdainfully allowed submissive men (aka fairies, pansies, fags & queers) in a receptive role to sexual service him. Those willing to "risk" being roughed up & suffering verbal humiliation & degradation during the sexual encounter. As well as the "risk" of being robbed or subjected to demands of money afterwords.
Dirty poor white trash or rednecks who want a good blow job but have a macho nature about them that says no; may or may not rough up the giver just a bit.
Sandy preferred rough trade when he was horny and wanted to give somebody a blow job. He liked being called names and getting slapped around. He also liked smegma.
Indie label; originatedin the early 80s for post punk bands such as Gang of Four, Delta 5.
Now home to the strokes, moldy peaches, libertines, hidden cameras etc.