pills, ecstasy, From Laotian word Yah-Bah which in translation to english means crazy medicine. (Say Yah-Bah fast enough and you will know where it came from)
"Aye wodie you got any yops?"
"Nah no X's"
"I'm having perks and bars right now"
"Sh*t its still gon get me right ain't it let me see a few of them yoppas"