Oof, I'll be honest, if I saw that I would think its rather tasteless. I'd avoid it. That said, if you still think BDSM LUVR is a good idea, go for it. You may get some weird looks, but its harmless lol
Haha, had a similar situation. I got the Supra not more than a few days ago and got the same compliment as you did when I went to an In-N-Out. This car certainly gets a lot of positive attention :) its really nice to see other people happy to see it!