noun, masculine/ˌpolo ˈflaʃ/plural: polos flash
freeze pop, freezie, ice pole (a water-based liquid confection that comes in a clear plastic tube and is frozen before eating).
“Dame cien pesetas para comprarme un polo flash de fresa en el quiosco.” — Give me a hundred pesetas to buy a strawberry freeze pop at the kiosk.
From polo (“ice pop, popsicle”) + flash. The term flash (and its variant flax) is a genericized trademark derived from Burmar Flax, a popular Spanish brand of freeze pops introduced in the 1970s. The variant polo flan is a childish phonetic corruption of polo flash.