I grew up in Brooklyn and we called them pinky balls. At one point I remember inserting the ball into (god this will age me here!) tube sock, standing against a brick wall and whacking it against the wall between our legs and under our arms to the tune of “hello, hello, hello sir”. Does anyone have any recollection of this? Also, will the new principal at PS 236 please check the roof…there must be a zillion pinky balls up there…unless Mr. Rahinsky got them first!