She wins

River: Alright, I'll take it! I mean, it's only fair since last time. I'll get it all I got!

And with that, River took three balls and steadied herself to hit the target. She missed the first time, but she had two balls left and was sure to make them count.

River threw a fast one on the second ball and missed by a few inches. Now she only had one shot left. It didn't help that June (and a little bit of Mimi) kept teasing her.

June: C'mon, Miss River! I know you wanna look at these big' ol titties of mine! Or do you suck too much throw a ball!

Mimi: Just one more miss and you'll have to do a forfeit~...

River knew Mimi was right. It had to make this throw count. She narrowed her eyes, widened her stance, and even licked her lips for some cliche reason. All eyes were on the target. One Shot. Don't Miss. Make It Count. Even the fellow spectators were on the edge as they waited to see what would happen. Then, River took her chance. She hurled that ball to the target and HIT it right dead center.

June was about to gasp, but the dunk plunged her into the water, ripping off her bikini top, as usual. Mimi could only look with her jaw agape in shock as the crowd cheered and River stood triumphantly among, like some kind of champion of female nudity. She walked over to the counter, hands on her hips, and smiled ear to ear.

River: Welp, looks like I win, Mimi!

Mimi could only look down at the ground as her victorious opponent stood.

Mimi: Yeah I guess you do.... s-s-so what are you gonna make us do?

River actually had to think for a second. She was so concentrated on hitting the target that she didn't even think of a good forfeit. But she had to think of a good one, as when they stole her clothes, she had to run by the boy's soccer team while they all stared at her jiggling butt! She thought about Mimi and June's character and knew just what to do.

June came out of the tank and walked over to the counter, not even bothering to put her top back on. She was so excited for the forfeit actually since she loved being naked in public so much.

June: So, teach, what's our forfeit!?

River: Oh I have just the thing for you two...

River grinned while Mimi could only cower in nervousness, and June was almost jumping in joy over the coming forfeit!

River: Now then, I've made my decision! Mimi, you're going to take June's spot on Dunk a Bimbo!

Mimi: W-what!?!

River: And June...

June: Yes!?

She was just so elated and excited at this point.

River: since I know your... type, I'm going to have you work at the grill station, where you have to wear overalls and tons of protective clothing to serve people food!

June: ... WHAT!?

River: UH! No objections! I won the bet after all. Now get to it, my students!

Mimi: Umm, in that case, can I please go somewhere to change?

River: Nope! You have to do it right here!

Mimi gasped and looked around at the crowd that gathered before them. Even if she was going to be changing into a revealing bikini, she was still going to be completely naked in front of an absolute stranger, even if it was for only a few seconds. She looked up at River trying to find some kind of sign saying she didn't have to but found none. Just the smiling and giddy face of her Vice-Principal. With that, Mimi quickly took off her Boobies shirt and shorts, letting out her small and perky tits and shaven bush. She stood for about a minute to cover herself with her arms in front of everybody.

Mimi: Wait a minute... what am I doing!? June, give me your bikini right now!

June: Alright, alright, miss hurry-pants.

June took over her bikini bottoms and handed the two items to Mimi, who struggled to put them on. Eventually, she tied them tight around her body and walked over to the dunking station.

River: Off you go now!

June grumbled and walked away, not even bothering to cover herself, as she was going to do plenty of that later.

With those two gone and her **** of humiliation completely, River planted butt on the seat of the counter.

River: Step right up! Dunk a Bimbo! See if you can get her naked! Only $1 per ball!