"Wait a sec," Mary says. "Here we are. Check THAT out." Mary lifts the vial up and it glints in the sunlight.
"Hello! Lactating here! Damn it!" Janet gestures to her newly formed udders.
"But check this vial out! 'Vial For Being No More Flatulent Than a Normal Person'. It's perfect!"
"Awfully convenient. Strange, too."
"Stranger than having a transformation vial that just gives you gas?"
"True. Drink up and then get this milk outta me, durn it!"
"Yeah."
Soon enough, they've drunken the vial and no longer have this gassy problem.