I still remember during my childhood my mom use to be very angry at me if I drink coke or any other soda.Whenever I use to visit any marriage with mom back in India I use to eat my favourite soda-icecream.
1)Add half scoop of vanila ice-cream or any falvour that you like in a chilled glas.
2)Add plain soda and fill till the brim.
3)If you wish top it with whipped cream and sprinkle with chocolate chips, before serving.
Enjoy. While writing this I am cherishing my old memories:)
Just read the definition on wiki- An ice cream soda or float (United Kingdom, Canada, United States, New Zealand, and East Asia), coke float (New Zealand), or spider (New Zealand and Australia), is a beverage that consists of one or more scoops of ice cream in either a soft drink or in a mixture of flavored syrup and carbonated water.