The book “Jam Day” continues the adventures of Odessa students from 1976. In the previous book, Fifth Year Poker, they played cards ingloriously and lost all their money. A black period of hunger has set in. Thanks to charm and wit, they found a solution to the problem - they showed up for the birthday of an unfamiliar student. The birthday girl and the girl population were charmed, but the male population harbored a grudge. A fight was inevitable, serious passions were boiling, and the whole “combat life” flashed before my eyes. And here one magic word sounded very opportunely and very weightily.