A euphemism for crotch, in terms of the female anatomy (aka vagina). As heard in S08E04 of Bob’s Burgers.
Catherine: “They’ve been bullying Kendra—and this one gal, Laurie, she...”
Chris: “She kicked Kendra in her tinkle-dink!”
Catherine: “It’s the word we use for ‘crotch’.”
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.