Based off your tongue ring/tattoo fic: times Blaine tries and fails to lie to Burt about things relating to Kurt. :D
It didn’t take long for Burt to realize that Blaine was the weak link.
Neither of the boys were great fibbers, but Kurt excelled at diversions. He could talk around a question for hours, getting angry about something else until you were on the defensive and storming off in a huff before you even realized he hadn’t answered your question in the first place.
Blaine, on the other hand, carried with him a strong moral compass that made it nearly impossible for him to avoid answering a direct question when asked. Coupled with Blaine’s intense determination to stay on Burt’s good side (Burt didn’t know Blaine’s dad but he knew he was rather lacking in the warmth department, and he often wondered if that had anything to do with it), that compass made Blaine Anderson just about the worst liar Burt Hummel had ever seen.
Burt tried not to take advantage of that fact, but well—sometimes he just couldn’t help it. Like the first time Kurt asked to go to a sleepover at Mercedes’ house after he and Blaine had become official (Burt wouldn’t call it ‘started dating’ because those boys had been dating as long as they’d known each other). Blaine was over at the house for Friday dinner, and he and Burt were watching Sportscenter while Kurt finished up cooking.
"So what are you up to tomorrow night?" Burt asked during a commercial. Blaine froze, his cheeks turning pink.
"I, uh—" Blaine started, before rubbing his hand along the back of his neck. "Why do you ask?"
"Kurt’s hanging out with the girls tomorrow night, right?" Burt asked, frowning as Blaine’s mouth began working like a fish. "Blaine?"
"Yes?" Blaine asked, and Burt wasn’t sure which question it was meant to be a response to.
"Is Kurt hanging out with the girls tomorrow night?" Burt asked, and Blaine’s eyes turned big and sad.
"I think he said he was doing that," Blaine replied. "Right?"
"Kurt’s not having a sleepover with the girls, is he," Burt said, suddenly putting it all together. "He’s having a sleepover with you."
Blaine’s face crumpled. “Yes.”
Burt sighed, wishing he had a beer. “Ah, come on, don’t look like that.”
"I’m sorry," Blaine said. "We didn’t mean to lie—"
"Of course you did," Burt said, shaking his head. "You’re just no damn good at it."