On my 21st birthday I went pub crawling with some of my friends. Lots of places offered me a free drink for my birthday, though a few bartenders/waitresses seemed to revel in giving me the grossest thing possible as a freebie. I had a cement mixer and a brain hemorrhage, neither of which I liked but which weren't that bad. The standout worst mixed drink I had was a prairie fire -- cheap tequila and tabasco sauce.