When they were drinking in a bar, the time travel did not begin. An ant climbed onto someone's arm and gave a close-up.
When the three of them traveled through time to the end of the world, there was a giant ant rampant. It is estimated that the world was destroyed by these monsters,
but how did the ants come? One person in the film said: "Every time you travel, your weight will increase by 20 kilograms."
Obviously, the old man had ants on his arms during the time travel. Later, because of too many trips, the ants grew bigger. The reason why he hasn't grown bigger is that he has "backflowed" the same number of times during time travel, thus returning to the second after he first entered. As soon as the other two people were about to enter, he completed the process of making "big ants" and came out of the men's bathroom.
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