"Some Cold" is a Eastern Canadian phrase meaning that it is very cold outside, it comes from the saying "It's really something cold out there"
Son: Dad! I'm going outside!
Dad: Okay. but wear a coat, it's some cold out there eh!
A technique cannabis growers use induce cold temperatures to imitate purple flowers.
"Naw man, that purp be stanky 'cause the chlorophyll froze. Stupid growers be Cold Shock(ing) their beauties."