What happens when you mix Lortab and beer?

From drugs.com (see link to the left):

Do not take Lortab with alcohol, other narcotic pain medications, sedatives, tranquilizers, muscle relaxers, or other medicines that can make you sleepy or slow your breathing. Dangerous side effects may result. Do not take this medication without first talking to your doctor if you drink more than three Alcoholic Beverages per day or if you have had alcoholic liver disease (cirrhosis). You may not be able to take medication that contains acetaminophen.

From TrustedOnlinePharmacy.com: Avoid alcohol while taking Lortab. Alcohol can increase drowsiness and dizziness caused by the medication, possibly resulting in unconsciousness and death. Lortab can be damaging to the liver when taken with alcohol.