when your balls are hot and swampy, and glued to your thigh, say from a long and vigorous game of monopoly, stand and thrust your hips forward and backward violently causing your sack to sway and air out a little
Etymology: scrotum + rattle = scrattle
"hang on a sec- i've got to scrattle...ok. damn that felt good"
Noun; a person who is acting ridiculously and being ignorant about it.
Kelly was a scrattle when she refused to admit her boyfriend was lame.