Grandparents' triple treat

PawDad and I experienced a special moment of bliss over the weekend, holding all three of our (matching clad) grandsons in our arms at one time.

Truly a triple treat.

Today's question:

Speaking of triple treats — and because I'm still in the hot, hot, hot desert as of this writing — if you were treated to a triple cone today, what three flavors of ice cream would you choose?