Ok the place I was talking about is...
Tee Shirt People. Although it does not say that on their sign. They look like a clothing store, a very crowded one at that... you can't see the blank t's until you talk to the guy. His name is Zahid (I'm pretty sure). He is very nice.
Unit 13 - 2965 Islington Ave, Toronto M9L 2K8
Its by Finch, in North York area
www.theteeshirtpeople.com