A fountain soda that comes in a extra large styrofoam cup that's loaded with ice and usually purchased at a convenience store.
Kaylee : So girl where did you and Jake go for lunch?
Kiersten : Just went to the gas station we shared a sandwich and Polar Pop!
Kaylee : How romantic!
Kiersten : I know and by sharing A drink we also shared slobber too it was like kissing of course we did that as well.
Steve: Hey Kiersten want some of my Polar Pop it's Dr Pepper!
Kiersten : Uh gross I don't want your slobber in my mouth!
Steve : How bout my Dick!
Kaylee : Fuck off Steve before I make you wear that Polar Pop!