The audience snickered. No applause, no groans, cheers, boos.
More of a nervous titter kind of thing and ordinarily the Jeopardy audience doesn’t react at all.
Check out this website:
http://www.j-archive.com/showgame.php?game_id=3341
They have it in the category “1961” as: “On August 4 he was born in Honolulu, & he has the papers to prove it”