Hi I've been trying to work out which movie this is for ages,

The name I can't remember but it was made around 1990 and is an american black comedy I think,

I don't remember the plot but there is a scene in it where the two men are arguing and one gets into the car and locks the doors, the other asks him to get out and help him with something, but the other continues to to say no, so the man goes of and gets a petrol can and pours it all over the car and takes out his matches and asks again, and is just about to light the car on fire and the guy gets out!

Any ideas?

Real Men (1987) (http://www.imdb.com/title/tt0093828/)
You can see that part of the movie here: YouTube - RealMen87 6/15 (http://www.youtube.com/watch?v=XQC2OgWY0rM&feature=PlayList&p=01C16CEB6BB41399&index=5)

Thank you so so much I have been looking for that for years! Thank you :)