This green screen clip features a person dressed in a Grinch costume, wearing a Santa coat and hat, performing an exaggerated, theatrical greeting, stating “Hey, what is up my guy!” The meme originates from a popular viral video where the character is filmed interacting with passersby in a festive setting, and the unique, high-pitched, and slightly unsettling vocal delivery makes it a perfect reaction meme for enthusiastically or ironically greeting someone, or for expressing extreme excitement.
