Too much of a good thing can sum up many a night spent drinking too much alcohol and smoking too much weed. Research has shown that drinking alcohol and smoking weed (also known as getting “cross-faded”) can increase the body’s absorption of THC, potentially making you more high than you bargained for. In addition, a dry mouth and increased thirst are side effects of cannabis, which when mixed with the diuretic effects of alcohol, can have you feeling dehydrated.