Props: Need a Scout stave or a stick about 1" diameter x 5' long.
Pick out two unknowing people from the group to hold up either end of the stick about elbow high. Let them know the stick they're holding in now a counter in a candy store.
Scout #1 stands behind the stick and acts like he's working behind the counter.
Scout #2 strolls up..." Hmm...a candy store...gee, I'm hungry." Goes up to the counter.
#1: "Can I help you?"
#2: "Yea, I'd really like a Hershey bar."
#1: "Sorry, fresh out of Hershey bars."
#2: "Thanks anyway" and leaves dejected.
Repeat the above scene 3 or 4 times with different scouts, asking for different candy bars, all with the same negative response.
Finally, have all the scouts enter the "store".
#2: "Gee, mister, we asked for Hershey bars, Milky Ways, etc., and each time you said you were fresh out. Do you really have any candy in this candy store?"
#1: "Why sure I do."
#2: "Well, what do you have?"
#1: "Well, especially for you today, right here I have TWO SUCKERS ON A STICK!"