Take the Mushroom and go find Tink.

Although the scene in the bathroom was pretty hot, Peter decided to follow other plans. He grabbed Alice's purse from the bathroom counter without drawing attention to himself. He opened the purse, took the mushroom and left the threesome to themselves.

Peter spotted Tinkerbell drinking at the bar and took a bite out of the mushroom before he flew over to her. "Hey, Tink. What's up?"

Tink looked depressed and didn't even look at him. "Well, I'm sitting here drowning myself in liquor. What're you doing? Fucking some skank?"

Peter chuckled. "Why so glum, Tink?"

"Why so GLUM?! Why so glum, you silly shit? Because I don't get any action. I have a hot body but I'm to small to use it and you won't give me the time of day!"

"Turn around Tinkerbell."

She turned around to see Peter and gasped. Peter had shrank himself down to her size. In fact, Tinkerbell was a bit taller...

"You can thank Alice later. It was her shrinking mushroom. I've been meaning to lose the virginity thing and I wanted to..."

Tink grabbed him and gave him a deep kiss?