You do, but too late

You don't want to give in to the smaller girl, especially since you kind of enjoy being stuck between her breasts. Refusing to quit, you start to thrash about trying to get free. Still, Heather just has too much leverage and all you end up doing is using up more of your oxygen faster.

Your mind barely able to process a thought anymore, you realize you can't escape her grip. As much as you love the feel of Heather's chest in your face, your lungs feel like they are ready to burst!

Accepting your fate, you tap out against Heather's leg. The only problem is that you are barely even conscious at this point. Your fingers are just barely brushing against the girl's smooth skin and she doesn't even notice. Your sister and Carol are also too busy cheering Heather on and don't see your submission to the blonde.

"Guess you were braver than I thought! But not stronger... Pass out it is. Sweet dreams loser..." Heather says with a giggle right before you lose consciousness between her enormous tits.