If he does like science, you could buy him this book "The universe in a nutshell" by Stephen Hawking.
an Wallet, its a good symbol to a guy that is becoming adult. My father gave me one at my 18th birthday hahahah
I don't really remember. It tastes disgusting tho. Being drunk is different for everybody. Somy people get relaxed or more confident. They talk way more and to more people. Others tend to get really depressed but I only know one person who's like that. Best thing is to try it out yourselves and see if you like it.