little crunchy. got a leg stuck between my teeth. >> they are a little bit like shrimp. >> reporter: cicadas survive only because there are too many to be devoured entirely. will they be around long? no, just a few weeks. they are out toate mate, lay eggs, and die. will they bug some people? absolutely. there is even a new film this spring, you guessed it, the creepy guys are called cicada. >> unbelievable. >> reporter: scientists say, remember, if you are caught up in this periodic overwhelming cicada storm, it's not so much a scary nuisance as a natural wonder like the grand canyon or niagara falls. that's what they say. tom foreman, cnn, washington. >> all right. now let's talk about a tradition that has nothing to do with swarms of loud bugs, just decades of laughs.