One of the college bars (possibly Hertford?) in Oxford used to serve a thing called a Pan-Galactic Gargleblaster, which featured 5 shots of clear spirits and 1 of blue curacao, topped up to pint level with lemonade. I got one of those down in one on a pub crawl in my first year, and shortly afterwards was banned from drinking anything else for the rest of the night as no one wanted to deal with the potential upchucking.