In the midst of a passionate moment with Harry in his dorm, your lipstick left unintentional marks all over his mouth.

As Hermione and Ron entered unexpectedly, Harry, unaware of the colorful stains, looked at them with a blissful smile.

Hermione stifled a laugh, exchanging a knowing glance with Ron. "What's so amusing?" Harry asked, puzzled.

Ron, trying to contain his laughter, pointed to his own mouth, signaling to the lipstick marks. "Mate, you might want to check the mirror."