212 points
Another word for the season of Autumn is Fall.
Thus, the DM is about to make a pun about Fall damage. The player of the bard notices the incoming pun, takes defensive action via casting a counter-pun spell, and thus prevents a table full of groaning and moaning, and possibly even laughter.
16 points
*
Laughter from a pun like this is a rare thing, a charisma check of 19 with disadvantage.
4 points
6 points