You're thinking of "Neapolitan", no doubt. It of course refers things or people from the city of Naples, Italy. I'll let Wikipedia take it from there:

"Neapolitan is a kind of ice cream, or more precisely, of ice cream packaging. The box (or tub, bar, etc.) is divided into three flavors, usually strawberry, chocolate, and vanilla. Other combinations are possible, such as banana/vanilla/chocolate or caramel/vanilla/chocolate). Neapolitan is listed as the third or fifth favorite ice cream flavor in the United States. Neil Armstrong ate some in space in July 1969.

Neapolitan ice cream is so called because it is a variant on spumoni, a three-flavoured (usually cherry, chocolate, and pistachio) ice cream originally made in Naples. Spumoni was introduced to the United States in the 1890s."

http://en.wikipedia.org/wiki/Neapolitan_ice_cream

--Very kind words Jodie44. Thank you.