The equivalent of "Smack Wally". An alternate form of the "Spot the Pony" title of features in young girl's annuals.
Doon MacKichan: "At first we called it Spot the Pony because that's what you have in those young girls' annuals. Then Kevin Lygo suggested Smack the Pony... People think it's a reference to something sexual but in fact it's a made-up thing."
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.