When you reach down and grab a nice hand full of grass or clover (this is where the foliage comes in) and smack someone in the face with it all, while you shout out "FOLIAGE PWN!"
guy: hey go foliage pwn that kid in the high waters.
Jane: 'Wow, Johnny, I like what you've done with your frankfurter foliage; the braids look great'
Johnny: 'Thanks Jane, I thought you'd like them. Now, if you wouldn't mind, please continue sucking and let's keep the rest of the small talk until after the vinegar strokes. I'm paying you by the hour and every time you talk I am forced to look at you and be reminded about how utterly repulsive you actually are.'