Is it normal to be able to down drinks?

Apperently this is wierd. It also super hard to get drunk and often if I get a mixed drink it usually has like 5-7 kinds of liquor. So it hits me faster. Apperently downing 2 island ice teas and a beer in under a minute is considered shocking. Whats worse is at that amount of alchohol I still bearly felt anything. Which is why I usually just go for shots of jack and coke and have 7-8 of those. Bartender said he never seen anyone down 2 tall islands that quickly. Im also very short and don't wiegh alot.