A fork of Rural Dictionary
A truscum is a (usually trans) person who believes that you need dysphoria to be trans. It's an archaic argument which seeks cis approval instead of holding trans people up. A lot of truscum have extreme internalised transphobia, which they take out on other trans people who they see as 'transtrenders'.
Person A: Did you know Kalvin Garrah's a truscum? Person B: Yeah, he's hurt a lot of people with that kind of logic.