Never drink a beer as alcohol ..and so the expectations.. There are different types Mild, Premium, draught, strong etc... Also different brands.. I saw some reviews on Fosters.. This beer has its peculiar characteristics.. It's a supreme brand to be drank with legacy & prestige. You need to drink when you just want to refresh and carry a prestige value amongst the family. Knockout & Kingfisher strong is way different... Wherein you can expect a heavy kick instantly. Budweiser is quite different.. Where as tuborg, heniken ..you need to put in a slice of lemon in the bottle and drink..
So , when you drink a beer try to enjoy it..instead of counting the number of bottles consumed. ..if you still expect heavy kick from any beer then mix it with whisky or rum .