In response to keg-standing partygoers and dishwashing averse party hosts around the globe, Robert Leo Hulseman invented the Solo Becher, or Solo cup, in the 1970s. This iconic beer cup has permeated discerning beer cultures around the world ever since.

The cup is perfectly designed to receive the inevitable amount of excessive foam that emanates from a finely jostled keg after being rolled from a high schooler’s car to a backyard. This led to the creation of the Instragram-friendly slow pour. Beer geeks love a good faucet, and to achieve this foam, the Solo cup works best with a party pump faucet.

Unbeknownst to many, Solo cups include lines to delineate the varying pour styles, which are particularly fashionable in craft beer circles these days. Starting from the top is the foam pour. Moving down next is the kinda foamy pour. Next is the “I heard if you dip your finger in there with nose grease or ear wax, the foam will go away” pour. Finally, there’s the “bro, it’s all foam! Pump the keg some more” pour.

These lines were inspired by older drinking glasses that had lines for varying purposes, one of them being drinking games. The Solo cup lends itself well to a variety of these, including flip cup and beer pong. Happy April Fool’s Day. Rabbit Rabbit.