"Nerd." You muttered to him, commenting on him after he just finished explaining some sort of robot thing to his friends.

"Thank you." He replied calmly, taking it as a compliment. You seemed confused, then he sighed and explained, "Nerds are smart, so thank you for calling me smart, doofus."

He shot you a cocky smile, then stuck his tongue out at you and quickly turned to his friends to keep talking.