Jokes about English pronunciation are not allowed.

The first is the difference between long sounds and short sounds in English. English long sounds and short sounds are not only different in length, but also different in quality.

When discussing the secret of staying up late with the landlord, he said that eating midnight snack often keeps him awake and focused. Unexpectedly, the landlord heard that he often ate snakes in his room, thinking that he secretly kept a bunch of snakes in his bedroom every day and killed them. He was shocked at once. The vowel letter A in snake is pronounced as a long sound, and the vowel letter A in snack is pronounced as a short sound. The pronunciation length of long sounds is more than twice that of short sounds, and the sound quality is also different.

I hope it can help you solve the problem.