"BUCKETS!"
From the archives of TiPWiki, the unofficial Duke TIP Wiki
This expression was frequently shouted by, Term II Tipster at Rollins 2016, Taylor. Simply put it's proclaimed when you try to throw something into a trash bin, or any place really (as shown when a male TIPster threw gold fish into a female TIPster's cleavage, then yelled "BUCKETS"). No matter if you get the object into the bin or not you must shout "BUCKETS".
Although this has little to do with the subject, another common phrase was "Kobe" but not for this setting. At Rollins during Term II 2016 it was very popular to flip water bottles onto coffee tables, or any flat surface, and see if they would land on their bottom. So overtime you flipped a water bottle, whether it landed on it's bottom or not, you were required to shout "KOBE".