Tism tickle

"Tism tickle" refers to a transient but intense fascination with a particular subject or activity, akin to a brief period of deep engagement often seen in individuals with autism who show strong interest in specific topics.

Jon observed Caleb's 'tism tickle' with amusement as he watched him compile an extensive report on Ernest Shackleton's Arctic expedition, knowing it would likely be a different topic by next week.