Green’s Dictionary of Slang

t.m. n.

[abbr. tailor-made n. (2)]

(Aus./Can.) a factory-made cigarette.

[Can]R. Caron Go-Boy! 16: Want a TM? [...] Go ahead, man. Take one. This is going to be your last chance for a tailor-made.
[US]Bentley & Corbett Prison Sl. 66: TM’s A manufactured cigarette, whether it is a name brand or generic.