![People Are Still Just Finding Out That The Lines On Red Solo Cups Can Be Used For Measurement](http://townsquare.media/site/34/files/2020/06/GettyImages-1178921244.jpg?w=980&q=75)
People Are Still Just Finding Out That The Lines On Red Solo Cups Can Be Used For Measurement
Red solo cups have been a staple in our lives for what feels like forever, but some people are still making an interesting discovery when it comes to the popular party cup.