Found this image in one of MachineBoy's books -- "Good-bye Mommy" to be precise. (Illustrations by David Melton, illustration copyright 1977, there, that should get the blue hippo lawyers off my back.)
Other likely things:
Um... wait, I'll think of something. Gimme a minute. No, sorry, nothing's coming to me. I just really really like this picture. God knows why. I think it would be an excellent business logo. Maybe for a jazz bar. Or a weight-loss center. Or a recording studio. In any case, yeah, enjoy the blue hippo while I go to my motorcycle lesson.