to bury ones head into something and use a foot or paw to try to move or uproot, like a rhinoceros
Huck was rhinocerosing me to take my spot in bed
When your height/weight ratio would normally make you "obese", but you are really in good shape
Kenneth - "Chas, this BMI calculator says at 6'1" and 230lbs, I'm obese! But, I'm in the best shape of my life"
Chas - "more like obeast!"