Erin wondered what would happen if she swapped the word "swollen" for the word "breast", and decided to test it out. The moment she did, Tina's balls vanished from her crotch. However, her tits quickly swelled up, and became all wrinkled as their skin merged together, removing her cleavage entirely. And in the place of what was once a pair of quite large breasts, now was a massive scrotum with 2 melon sized balls inside of it.
Erin couldn't believe her eyes. Tina had balls for boobs. And from the look of it, they still had her nipples, though she doubted that anyone would ever be wanting to drink from them. She then watched as someone accidentally bumped into Trish, causing her to stumble forwards and land face down onto Tina's new sack.
Tina immediately went pale and groaned, holding her chest in pain from the looks of it. But then she opened up her mouth and a stream of white squirmed out from it, followed by a rather large flow of a similar looking liquid, pouring all over Trish's head in the process. Sindy just broke down laughing her ass off at the sight of what just happened, and then retold the summarized play by play mid laughter.
"Haha you just fucking came! Haha, and from being hit in your tittynuts! Haha, oh my god! Hey, how's Tina's titty semen bukkake taste, Trish?"
Trish wiped her face clean and got up, also laughing at what just happened. Erin had to hand it to her that she could at least take getting an unwanted cum bath, in public, without a single shread of shame or embarrassment. That said, this did give Erin another idea she wanted to test out on them.