When your buddy keeps saying he's got a girlfriend, but you never meet her. Imaginary girlfriend.
Vince: "Trevor, why haven't we met your girlfriend? You've been dating for over a year."
Trevor: "She's really busy."
Vince: "Oh, yeah, I forgot how busy Canadians can be."
Mike: "Vince is just saying you've got a Canadian girlfriend, that's all."
The type of sex one has with their imaginary girlfriend. A combination of "imaginary" and "vaginal".
Vince: "Dude, I got my girlfriend to do anal last night."
Brian: "I can't even get my girlfriend to do anything but vaginal, and like once a week. What about you, Trev?"
Trevor: "Last night- "
Mike: " -Dude, Trevor only gets imaginal from his canadian girlfriend! You've never met her."