A boat owned by a Yoga King needs to be able to let him keep doing his exercises while he's on it. That's why his boat is a rowboat, so he can work on his yoga arms as he gets around.
As he rows the rowboat with his butt, you see the Yoga King eating something with his toes. They're tater tots (てい). Tater tots are the perfect snack for a rowboat. They're small, delicious, and they float if you drop them in the water.
Currently there are no similar looking kanji which exist in the WaniKani learning system