Lol, when recently the new mall opened in my city, me and my friend went there on the opening day, and a tuxedo selling shop was giving out glasses of champagne. My friend took a glass and drank half of it and he was like "My parents let me drink champagne". The next day he told me that when his mom felt alcohol from his mouth she did nothing about it.
OT: Well, I don't know how it is to get kicked out of school, but my mom acts like I am going to get kicked out of school when I do not do my homework and when she finds out I didn't do a single home work, she takes away my phone, computer, all my pocket money and doesn't let me go hang out with friends outside.
EDIT: Did he/she just walk up to you and ask you to drink their juice? Then it was probably set up