clocked
What does clocked mean?
To be read as trans when you'd rather not be, or to spot that someone else is trans. Getting clocked is the moment the blend breaks: a stranger, a cashier, a stare. For a lot of trans people it lands as a gut-punch and, depending where you are, a genuine safety risk. Spawns 'clockable' and 'clocky' for someone easily read.
Origin
"Clock" meaning to notice or recognize has British slang roots and was reinforced through AAVE and ballroom culture (where "clocking" means spotting something). It spread widely as Gen-Z slang for noticing or calling something out.