Urban Dictionary: slacky

1.	slacky
	a semi-erect penis suggestive of a penis which has partially lost turgidity after cuming That hole looks a bit small but maybe I could thumb in a slacky buy slacky mugs & shirts semi penis lob on chub half-mast by Christianaj Apr 11, 2007 add a video
2.	slacky
	A semi-erect penis. More specifically a semi-erect, post-ejaculation penis. That hole looks a bit small, maybe I could thumb in a slacky. buy slacky mugs & shirts semi penis lob on chub half-mast by Christianaj Apr 10, 2007 add a video