1) A device, either given or not, used for rescuing young boys who have fallen on one's ice lawn.
2) Strong Bad and The Cheat's most favorite meeting place/hangout.
Despite the naughty-sounding name, a diddle stick is actually just a small non-conductive screwdriver-like tool for making fine adjustments to components inside a variety of electronic devices.
Yes, it's supposed to be small.
Diddle stick may be hyphenated (diddle-stick) or combined to form one word (diddlestick).
Engineer 1: Crap! I got my diddle stick wedged inside the gonkulator housing again!
Marketing Drone: What were you doing with... never mind; I don't want to know.
Executroid: Ewww! I'm never touching the gonkulator again!
Engineer 2: Hee! They have no idea what a diddle stick is, do they...
"Nigga Be Cool" stick - A baseball bat, broomhandle or other similar weapon used in "street warfare". Normally used while saying the phrase "nigga be cool"
"keep fuckin' 'round and catch somma dis NBC stick"
"What?"
"Nigga," (CRACK!!! (bat striking the other individual)) "Be Cool!!!"