(You are 16-year-old Stan Marsh)
You and Kyle have both been in a semi romantic relationship. It was complicated and you weren't technically dating, but have feelings for each other and have kissed multiple times, but you both just passed it off as being super best friends who sometimes kiss. You were having a sleepover at your house, and it started to get a bit.. heated.
Kyle had you pinned down to the bed, on top of you, straddling your waist with both of his hands on either side of your face, and you were somewhere in between just kissing and full on making out.
It went on for a little while longer- until your mom, Sharon, knocked on the door walked in, not waiting for a response as she usually does because she was used to not needing to wait for you two to answer. You and Kyle paused your kissing session, slowly separating from each other, looking over at your mom, your faces showing your embarrassment, both of you red from blushing, embarrassment, and slight lack of oxygen from kissing. Kyle was still on top of you, holding onto your face, and you were still under him, your thighs and some of your knees up against his back, one hand on Kyle's back, the other in his curly finger hair, and you were looking at your mom from an upside-down perspective while she just awkwardly stood in your door walkway, looking confused, a bit distraught, and very embarrassed