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King Harkinian is a popular inclusion in videos on YouTube, gaining large usage in remixes and YouTube Poops. Many of his lines and phrases, such as “Mah Boi”, and “Dinner,” are particularly popular in these videos. Though King Harkinian is portrayed as a noble ruler of Hyrule, several YouTube Poops have portrayed him as idiotic, stupid and sometimes villainous. These elements can often be found back in various Youtube Poops surrounding King Harkinian.
Mah Boi
In the opening scene of the CD-i game The Legend of Zelda: Faces of Evil (seen above), King Harkinian’s line “My boy, this peace is what all true warriors strive for” has gained widespread popularity. His particular way of saying “My boy” is commonly written as “Mah boi”. The line, along with his facial expression, often gets featured in numerous fanworks. Mah Boi also has its own group on DeviantArt.
Dinner
“I wonder what’s for dinner” is a line said by King Harkinian in the CD-i game The Legend of Zelda: Wand of Gamelon. The line has become one of the main traits associated with King Harkinian, representing his love for dinner. The line has often been used in YouTube Poops, creating a variety of recurring themes such as the Dinner Blaster.
Source: https://knowyourmeme.com/memes/king-harkinian–2