Which legal theory is illustrated in this dialogue?

DONUT DAY AT THE OFFICE

Part $3$

Joyce: We had a lawsuit filed about this after the pastry rumble of $2017$ and there was $...$ oh yeah, I remember there were some specific rules that are detailed out in $34($b$),$ section $4.$

Bob: Those stupid rules were just made right after Winfred face$-$planted in the donuts when he slipped trying to get past Alison. They don't apply here and now. There wouldn't even be donut rules if he'd paid attention to his own big feet.

End Part $3$