I remember my first Guinness, my friend and I were scared sh!tless of it because every told us it tasted like motor oil and how it was really thick and nasty. So we went to this really small crappy liquor store up the street from my friends house and the only thing they had were the Guinness Extra stout bottles that were just slightly below room temperature. So we took them back to my friends house, poured them into a nice pint glass and downed them as fast as we could.
After about 5 minutes of just sitting there, I said, damn, that wasn't too bad, so we went to another liquor store and got the Draught Cans, and man o' man I've been in love ever since. Even went to Dublin 2 years ago just so I could go to the Guinness storehouse/musuem.