Finish yourself

You don't really care that it's degrading. You need to cum, and you're going to do it by fingering your ass, using Jack's spunk as lube. Your fingers slide into your hole with ease, and you immediately feel a deep satisfaction as your body gets what it needs, something, anything to stuff your ass. You plant your face on the floor and slot to fingers from your other hand into your mouth. Having something to suck on makes you feel so good a dirty. You don't want to question it, or what these feelings mean. Slow but firm, you fuck yourself at both ends, a sweaty cum coated wreck.

It's a good thing you're sucking your fingers, or else someone in the halls would hear your moans of ecstasy. It just feels so right. So good. Jack's cum, still warm, feels amazing in your ass. You want this feeling to last forever, but your such a slut for this and you can't hold on. Your body aches on the edge of orgasm, and for the briefest moment you consider the reality of the situation, that you're a gay cum slut. Or at least Bi. You feel a twinge of shame, but that emotion is gone in an instant as the orgasm rocks your body. What feels like a tidal wave of pleasure has you in spasms on the floor. It lasts so much longer than a normal ejaculation. The waves of bliss course through your entire body. If this is what being a cum slut can feel like, then you have no shame at all. Before the cloud of arousal has passed, you scoop your own meager load up and finger it into your ass.

Then you take a deep breath, a the shame kicks in. You'd heard of post wank guilt, but this was something else. With your arousal sated, you have some perspective. You sucked cock, enjoyed it. Begged for a guy to finger your ass, and loved every second of it. Then willingly used his cum as lube while you fingered yourself while pretending to suck another cock. Just a few moments ago you felt naughty for fantasizing over your dominant old teacher, but that seemed wholesome in comparison to what you'd just done.