soberloki prompted me with Snape, Aberforth: a Muggle encounter.
Having Truck with a Muggle (PG; Aberforth, Severus, Tobias; 100 words)
"Why'd you drag that in here?" demanded Aberforth.
"Please," Severus panted, holding up a badly beaten man, "hide him . . . here. I'll pay . . . you."
"I don't have truck with Muggles."
"But he's . . . my father!"
Aberforth drew his wand and spelled shut the door before turning it on Severus. "How'd he come to be here . . . in that condition?"
"He followed me, and my . . . friends didn't appreciate his . . . trying to make me . . . come home."
"'Friends'-Death Eaters you mean. Go out the front and leave him to me."
"No, I-"
"Lead 'em away. I'll patch him up. Come back for him when it's safe."