oh, that's just a grasshopper

A Texan is visiting Australia for the first time; He sees a sheep and starts laughing; he says to his Australian guide " oh, at home in Texas, sheep are twice as big!" He then sees a cow ands bursts " Puff, in Texas, our cows are much, much bigger!" And suddenly, he sees a kangaroo and asks, "What's that?" the guide answers " oh, that's just a grasshopper...”