Wiktionary
Usage examples of "tighty".
Panic tried to jump up into her throat, and then she suddenly remembered the rusty old pickup truck Bill Dunn drove on his caretaking rounds, and the joke sticker on the back bumper: LEFTY LOOSEY, RIGHTY TIGHTY, it said.
The slacks slid down and pooled at Dave's feet, leaving Dave standing there in his tighty whities.
They get what they want and then next thing they got their tighty whities in their pocket and they're out the door.
Paddy’s, he watched a red-faced FDNY bagpiper struggling to hold down a plaid skirt over his tighty whities in the frigid wind.