His cousin is from europe.
In europe you are allowed to drink in public without parents or a person "in loco parentis"
if you are 18 years old. but if you are at home or in closed societies and with your parents
or a person "in loco parentis" when you are 16 years old.
And when you are together with my dad, you are allowed to drink when you are 13/14/15,
because his granda told him so.
When you are together with my mom, you are allowed to drink when you are 3 years old and she keeps the hard stuff prepared for you.