Now this was a good reactionary episode. Unlike the "I broke the house" bit of the prior episode, this one delivers real reactions, and overreactions.
Jesse catches DJ holding a beer can and saying how she wants to party. He immediately assumes she's drinking, and her pleas fall on deaf ears.
The truth is, she caught the boy she liked and a couple others drinking, and was trying to point out how dumb it was. Her talk about partying was done in sarcasm.
However, the guys don't believe it, youth being what it is, and her previous "truth bends" during the recent week.
The truth DOES come out, and though we again finish with Jesse dealing with DJ rather than Danny, there's a real reason here, since Jesse was the one to go off on her to start.