By doing assjobs to your clients.

Since you can't just let her win like that, using such dirty tricks, you decide to fight back with such tricks, and harder if that's what it takes to win the competition.

"You want war, eh, then let's see if you can beat me at this!", you yell at Jane as you approach a client.

"You, dick out, now!", you yell at him, "Okay, i guess", he says as he obligues by taking out his member from his pants.

As his semi-erect member is in display, you turn back on the client, while pressing your butt near his member as you semi-squat near the chair.

"Tell me dear client, are you a tits boy or an ass man ?", you ask him

"I like ass, i guess ?", he responds.

"Then you're gonna like this", you say as you begin to press down your butt in his groin, eventually envolving his member between your buttchecks, but without putting his tip in your hole.

Once you do that, you slowly begin yourself up and down, and that movement stimulates him as his member is envolved in the movement of your butt, slowly but steady, you begin to increase the speed of your movements, and that makes him even more harder and aroused than before, and before you know it, he finally reaches it's climax, and spreads his cum all over your backside.

"That was the greatest moment in my life", says the client as he drops in relief.

"That'll be 50$ please", you say, and he pays it, as his mind is too blank as to think anymore.

"Impressive, really impressive i must say", Jane says as she congratulates you.

"That was nothing, either way, how about we stop coming with new tricks, and just focus ourselves to the competition ?", you reply.

"Well, that sounds good for me, so yeah, let the best waiter win", says Jane as she begins to attend new clients, upon which, you do the same, and with that, the competition enters into it's final phase, in which one of the two will finally rise as the winner of it.