This can't be happening. Severus Snape is being kidnapped by Hagrid, Potter, and Ronald Weasley. How humiliating. (SSHG, EWE, One-shot, Princess Bride inspired)
"Come off it Gin," George chided. "There's nothing we've all done that he hasn't." Snape's eyes narrowed. "Never have I ever," he started, straightening as if he were lecturing a class, "been in Gryffindor house. Nor have I been a member of an underground student club called Dumbledore's Army, nor have I taken a class from a best selling fraud." EWE, Post DH, One Shot, Complete.
After Hermione finished explaining, there was a long silence while Harry tried to think of what to say. Unfortunately, Ron spoke first. "But isn't he like...old enough to be your grandad?" Ron asked. "Ronald! Don't be ridiculous! Severus is ten years younger than your parents." "And the same year as my parents," Harry offered, "so he's old enough to be her dad, not her grandpa."
"Oh!" came a shout with a terribly familiar Scottish brogue. Severus and Hermione immediately separated, but the look on Minerva's face made it clear she saw exactly what they were doing. Post DH SSHG, COMPLETE