Man we really racked up a bigger bill than I planned I'm going to try tricking my girlfriend into paying the tab
Wow you would do that to her? But whose money is she going to use?
She can use hers, it's for her friends.
You are not an honest person, and that's a bad sign for relationships. If you're able to lie about something small like a restaurant check, you are capable of lying about many more things which can destroy your relationship.
You don't think getting her to pay is smart.
If you want her to pay for the tab you should talk it over with her. She might not even mind paying it or splitting it with you. Tricking her into it will make her mad though.