i think your laughing at the movie, and you have every right to.
No, not in the way you say.
My example is The Adventures of Buckaroo Banzai Across the 8th Dimension. My God, what a GLORIOUS mess of cheese, bad casting, bad effects, terrible costumes, suspect writing . . .
But somehow, it manages to become more than the sum of its parts, and it's a great watch -- not because it's bad, either, but because it's just plain fun. (And that absolutely brilliant end credits sequence doesn't hurt.)
And Callaghan talks about guilty pleasures -- one for me is Under Siege. Again, terrible movie. But I love it.
To say nothing of, well, I'm a guy. Every guy's got a little yen for the occasional explosion. Every guy's got a little Bay in him. Sometimes, bad movies are still fun, romping rides.
If I'm going to laugh AT a movie because it's so preposterous, a derisive laugh, well, that's what The Transporter is for. And Pierce Brosnan singing ABBA.