All of my kids have certain things they say/said as they were starting to talk. Rowan (and then Kemper), at somewhere around age 2, would point each morning to my "gagn", or "coffee". This is how they said the word for a really, really long time. They also would say "buzzuhderr" instead of "bulldozer".
My favorite Kemperism was "tomorning", which meant "tomorrow morning". I still love that one, though he's outgrown it.
Cannon's current one is "huckaluppuh". It just makes me want to find him helicopters everywhere we go just so I can hear him say it. He has no trouble pronouncing "coffee", but does say "tomomow".