kappa;  mythical water-dwelling creature;  excellent swimmer;  cucumber;  cucumber sushi wrapped in nori (seaweed)
 something easy to do;  cinch
 something easy to do;  cinch; (lit.) a kappa's fart
 anyone can make a mistake;  even Homer sometimes nods
 a fish out of water; (lit.) a kappa up on land
 cucumber sushi wrapped in nori (seaweed);  cucumber makizushi
 something that looks difficult but actually isn't;  swimming in a cold lake during mid-winter seems difficult, but it's nothing to a kappa