Things you can say about your car but not your girlfriend?

You will make a sentence and it will make sense with your car but it will be offensive for your girlfriend if you said it to her. I will choose the funniest answer as MHO. Let's see who is the winner.

Example: You can fit 3 people in the back,
Things you can say about your car but not your girlfriend?

Things you can say about your car but not your girlfriend?
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