Cum against the window
From Create Your Own Story
You can't take it anymore. You stroke faster and faster with your free hand fondling your balls. You cock swells and erupts, sending cum splashing against the glass. At least half a dozen shots paint the glass white. You catch your breath and flick the remaining drops of cum from your cock against the window.
You look up and see Luke with his hand down his pants, rubbing his erection vigorously.