Disclaimer: I do not own Hey Arnold!
"What did you just call me?"
Arnold gulps at the anger that can be heard in Helga's voice and seen in her eyes.
"Um, I said, 'Oh, Helga,'" Arnold emphasizes the parts that could possibly be misheard as "Olga" if blended together.
"Bullshit," Helga says, hopping out of her bed to put back on her clothes. "You called me Olga." Seriously, it's bad enough that her father always calls her by her sister's name, but her boyfriend, too...? "Were you thinking about her?"
"No," Arnold quickly denies, though he can't be entirely sure that's the truth.
Subconsciously, Olga probably did cross his mind since she, like he and Helga, who've been away at college, is visiting their hometown for the holidays.
"Whatever." Helga zips up her jeans, flings the door open, and before slamming it shut, says, "Why don't you just go finish with her? She's right down the hall."
Feeling awful for having triggered Helga's greatest insecurity in possibly the worst way imaginable, Arnold is left alone in her room to contemplate how the hell he'll clean this mess.