Wheel hop

So just what exactly causes it?

So last night it was drizzling a little and the roads had been wet for the day. Coming into my complex I gave a little too much gas and didn't nurse the clutch enough for my sh*tty MXV4's and they broke loose. The wheels hopped 3-4 times and kinda startled me and also made me worry about breaking my baby's axles or something. She seems fine today.....

Anyhow, so just what causes it and is there any possible minor damage that may not be very apparent at first if the wheels do hop?

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