Yots and yots

I've decorated G's room in a sailboat theme.  On the walls, I have a couple of phrases written.  "Come sail away with me," and "row, row, row your boat."  Every time we change him (and that's a lot) we talk about the letters, the color of the room, the boats and lighthouses.  He's a talker.  Big time.  I'm changing him today and he says, "O.  O, mama, O."  I say, "that's right bub!  What other letters do you see?"  He says, "yots, mama.  yots and yots of them."  (For those of you that might not be up to date on your toddler speak, yots = lots!)