The spectator buys a packet of Starburst (or any candy) and under the table, chooses which ones to give to you - and which to put in their pocket.
The winner will be the person with all of the red ones.
Statistically, there are only 2 to 3 red in every packet.
Even though they've made all of the choices, you have all of the reds and they have a pocket full of the other colors.
You can even pause mid-performance and tell them what color they're holding (zero peeks).
On this instant tutorial, you'll get over 1 hour of tuition from Mark Lemon & Peter Turner on this effect and multiple nuances.
+ BONUS EFFECT. Peter Turner will teach you his coveted mastermind effect using a packet of Starburst, so you can successfully predict their code.