Tipsy after 3 sips – normal?

I have drunk beer regularly for 15 years. Nowadays I drink once every two weeks, around 3-4 beers (500ml/pint) in that occurrence.

I have always got tipsy super quick. If I have a 330ml can of beer, I can have 3 sips (60-70ml) and I feel it. A tipsy feeling, within 2 minutes of those sips. Same from 2 sips of a glass of wine (= approx 40ml wine)… I feel it.

I don’t mind this, but I wondered if it is abnormal? I always assumed everyone felt it after 1 pint, the people that said they didn’t feel anything yet were just trying to be cool, because I have ALWAYS felt it after 1/2 a pint!

What is the norm? Do most people feel tipsy after one drink?