Well, I'm going to say "NO", it isn't bad. It'll be good for you to lift tomorrow to help get those toxins out of your system. Just keep in mind that it probably won't be your best lift day ever due to dehydration, lack of nutrition, fatigue, etc.,
I always hated hitting the gym after a night of drinking. I puked half of the time because I forced my body to perform as if it was in its best condition.
You do what you you've got to do... Just know that if you plan on progressing in whatever fitness goals you have (mass, strength, endurance) getting drunk is NOT going to get you there Unless you get some tail that night, that can be justified as a workout in it self LOL