Have you ever wondered the difference between swam vs. swum?
If you thought swum was another one of those kidisms, you would be wrong.
About swam vs swum
The regular past tense of “swim” is “swam”: “I swam to the island.” However, when the word is preceded by a helping verb, it changes to “swum”: “I’ve swum to the island every day.” The “’ve” stands for “have,” a helping verb.
So now you know.
flylikeagirl 
See? Smart *and* pretty. 😉
Smart = ability to google
Pretty = good shoes
I had a little smile at your ‘kiddisim’ posts….my kids use ‘versing’ and ‘swum’ so often , in the wrong way…that I slip into the habit my self!
It is sad when they stop saying these cute little things. My 12 year old gives me stank eye when I repeat them,