Because the Truth Is, All Non-Native English Speakers Sound Like Fez.*
In short: A whitebread couple places an order at a drive-through, then the voice through the intercom offers them a Sprite, and they can't understand because he's got this high-pitched accent.
Then there is dancing, singing, arbitrary ass-smacking, and other things you don't want to be confronted with in the world outside Charlie and the Chocolate Factory. (With the possible exception of ass-smacking.)
At the end, the couple finally realizes the voice in the monitor was asking, "Do you want a Sprite?", and they politely decline.
"it was actually more funny in hte beginning when i THOUGHT something funny was going to happen," said one uniquely profound YouTuber. Other responses were expectedly schizophrenic (with some fairly heated discussion about whether George Lopez's attorneys will be in touch), but hey, that's the crowd for ya.
*This is a sarcastic way of actually saying, "Not all non-native English speakers sound like Fez, a fictional character from That '70s Show whose ethnicity is never formally identified."