As his child, your mom, Chi-Chi has always told him to go easy on you during training, but since you failed to defend your lover during the Cell Saga, you've never been the same sweet kid and started training 24/7, never stopping for anything in fear of failing again...

You spar with your dad, being able to go Super Saiyan and all that jazz, you and your dad actually start trying against each other, making the wind pick up, the trees swing viciously and the water start crashing but Chi-Chi puts it to a end before it gets anymore serious...

Goku: powers down and takes a breather "Wow kiddo, you starting to get as strong as your old man kid~!"