No

You try your hardest but being stuck under your sister's ass for so long has made you too weak.

"It's useless bro. Just give up and start worshipping my ass!" Megan says with a girly giggle.

You give in to your predicament and start planting kisses all over your teenage sister's sexy ass.

"Mmm yes. What a good little ass bitch."

After a few moments Megan raises her ass off of you. You thought she was done, but she just removes her underwear and plants her now bare ass over your face.

"Time to lick my asshole brother! If you are good at it I might even let you breathe." Her friends giggle.

You start licking frantically. At this point you have completely given up to your sister and have resigned yourself to being her ass **** and worshipping her behind. You feel incredibly humiliated but also very aroused, as you are rock hard right now.