A myth popularized by freshmen who are new to smoking dope. According to kids who believe this rumor, LemonDrop Kush is a type of marijuana in which one drops lemon juice on the bud to increase the flavor. No I'm not kidding.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.