Drop your opinion on this

is it okay if i tell my parents i drink alcohol and i'm 21(M). i think they have a doubt regarding this after an engagement where i was drunk as hell and didn't return to house that day and slept there. The thing is i dont want them to find out i drink from an kudumbasree chechi or annoying aunties and uncles is it better if i tell them before that or i should just keep it under and dont tell them.