My bike is "leaning" a lot...

When I ride my bike with no hands on the bar it has a tendency to lean to the left. I have to compensate a lot to the right with my body. This feels very wrong and looks stoopid. Why is it like that? Is it crocked of some kind?

Any idea anyone..?

did you call it a fixie, maybe it took offense to this childish name, referring to it properly as a fixed gear will sort it out.