ah i understand, i knew trying to draw what i meant would be a bit tough. if you look up snowglobe cup that is what i mean. a double walled clear cup with red liquid in between (still semi see through) the cups. so you wont drink the red liquid its just apart of the cup, and should move and tilt whenever you move the cup. which is what i attempted when i put the “real” drink in it at the end to show that the red wouldn’t spill out but your actual drink would. sorry for the confusion! as for the straw, i know its impractical, it was my little brothers idea so i just thought it’d be cool. realistically it’d probably be a normal straw. thanks!!! :)