When you pull out and ejectulate on your girl (guy...whatever) then with your finger in your ejaculate, you draw trees, birds, etcetera on her back (front, ass...wherever).
I was banging my girl last night and pulled out and gave her a BobRoss.
The act of fucking someone "doggie style" pulling out before you orgasm and shooting your load on your partner's back and drawing a picture with the jizz.
Last night I hooked up with this chick I totally gave her the Bob Ross!!!
THE MAN, THE MYTH, THE LEGEND BOB ROSS!!! If you don't know who Bob Ross is you are a burden to society so go jump off a cliff if you survive climb back up and jump off of it again. BOB ROSS is an angel from above a gift from God he has brought a beautiful art and a soothing voice to cherish.
It is when you get a turtle head that just barely is pushing out your ass like a little paintbrush and you procede to draw on your partner using that turtle head while still attached to your butt.
A nice slang for telling your that they are a mistake before telling them what “beating the brush” means since bob ross says “we dont make mistakes,we make happy little accidents” and then beats the brush on the arsel