Omniscience

Tim still believes that I know everything. For real. He does not accept "I don't know" as an answer from me. Actual conversation:

"How was gymnastics camp?"
"Good."
"What did you do there?"
"Tell me what I did at gymnastics today." (Completely earnest.)
"Um... I don't know, I wasn't there."
"TELL ME WHAT I DID AT GYMNASTICS!"