To ponk is to love. But it is a word that means more than love, but also an attempt to describe the physical aspect/feelings of truly loving with 100% of yourself.
To ponk someone, is to give yourself to them utterly. It is a much stronger word than love.
If a horse girl says she ponks you, then she must really care about you. She'd put you over the horse.
Hey girl, I ponk you.
Awww I ponk you too!