Metal Gear is a stealth video game for the Nintendo Entertainment System. It was developed by Konami, and designed by the critically acclaimed Hideo Kojima. While the game did spawn plenty sequels, it unfortunately didn't get past the 1 million sales mark (more than 700,000 copies were sold).
An internet meme has arisen in recent years concerning various typos in the game. While labeled as Engrish, they are merely typographical errors.
The first enemy in the game first says "I'm getting sleepy.". He then falls asleep, as evidenced by the trail of Zs coming from his body. He then awakens, saying "I feel asleep!". While this is commonly believed to be a mistranslation of "I feel sleepy", it is actually a typo for "I fell asleep!". This is evidenced by the fact that he can attack you after the quote.
The second quote appears after Snake sneaks aboard a convoy truck. He says "Uh oh! The truck have started to move.". The most common belief is that the plural was used instead of the singular, but the word "trucks" could've been used instead, as there are many convoys when Snake enters the truck.
The Grey Fox is labeled as the "Gray Fox" in the game. As this is the first game in the series, the spelling of the Grey Fox had not yet been established. In the United States, while "grey" is the most common spelling, "gray" is viewed as a legitimate alternative spelling (although typically British).