Wheels

(gender of choice)
You have a best friend, Wills, and you've never fought and are great friends. You've been friends since you were 13, and now you're 16. Well, he's 17, a year older than you, but that's not the point.
One day, you were riding the bus to school together (Wheels was in 10th grade). Wheels was facing you, and there was an empty seat in the back, but you didn't want to sit down, so he decided to stand with you for company. You were chatting and laughing when suddenly the bus hit a huge bump. Wheels slumped into the back seat, and you went flying with him. You were literally sitting on him, your hands on his chest.