Tac Tics

Tac Tics is a mint, which is similar to the brand Tic Tacs. Bart swaps Marge's non-pregnant tablets with Tac Tics. When Marge discovers what Bart is doing, he throws the Tac Tics out of the window. Nelson comes along, picks up the packet and eats them, he not knowing that the Tac Tics are actually non-pregnant tablets.