Three mosquitoes are bragging about the content?

The answer is that the three mosquitoes brag as follows: The first mosquito said that I could tie a knot on a frog's tongue in a few laps, the second frog said that I could tie two frogs' tongues in a few laps between two mosquitoes, and the third mosquito said that I would knit a Chinese knot on many frogs' tongues.