You decide to carve a tree into a giant replica of your big toe because you think it will be really simple. Once you're done though, it looks like a really crude attempt at a fat, lumpy blob. Maybe carving isn't as simple as you thought.
えのき, ほう, ほお
You're admiring your simple looking toe tree when a lumberjack runs up and asks who created it. ぼく, you say. As in "I" said it, in a manly dude, way. He doesn't seem to believe you, so you say it a few more times. ぼく ぼく ぼく!