Yes

You don't hear an answer but scooter slides back in his chair as sasha shuffles next to you under the desk and as you mouth 'thank you' he slides back forward his cock resting against your face as you consume one of his testicles surrounding it as Sasha takes the tip of his cock in her mouth and you elicit a groan from scooter as you simultainously suck him before you guys switch. Sasha has a different technique to you as she laps at his testicles (like a cat) which seems to please scooter more so you do the same on the other side before returning to his cock and bobbing your head (being careful not to head but sasha)

Scooter dosn't last much longer and cum straight in your mouth but tells you not to swallow and to instead share the cum with your sister, you take a deep breath (through your nose) before sitting up right on your knees and leaning over your sister who relunctly opens her mouth allowing you to let the cum ooze out of your mouth and in one long string and after about halfs gone into her throat he tells you both to close your mouths and in doing so you both cover your lips in cum (sashas considerable more due to gravity) before he says "Swallow" and after you both show him your empty mouths he allows you to leave the confines of his desk.