"Now please hold still for a minute! You are wasting both our time", Brian said, sprayed with pastel dust.
"I am wasting my time for sure! Just because you want to play around with those pastels ..."
"Play around! Cretin!", Brian exclaimed, nearly throwing the piece of pastel he was holding at Daniel. Then, remembering that this was not a brush and highly breakable, he thought better of it and placed it on the easel carefully. "You nearly made me break that, and you know how hard they are to come by. Besides, if I recall that correctly, you were quite keen on a portrait of yourself."
"You didn't tell me it meant sitting here for hours !", Daniel grumbled.
"What do you think this is? Photography? This is high art, you know!?" Brian said, indignatedly.
"High art? You won't even let me have a glimpse, I have to sit here for hours and all you do is choose different chalk all the time. How many sheets have you already messed up with that stuff? At least ten, I wager.", Daniel scoffed.
"Actually, it were four. Besides, I usually work in oil and need to get used to those. I can easily find a different model. With more patience and not as ugly as you are!", Brian stated.
"Ugly!", Daniel roared, "I don't have to put up with that!"
"So you don't want your portrait?", Brian asked smugly.
"No! Just let me have a look at your daub and then, for all I care, you can put it where the sun don't shine!", said Daniel, getting up. Rounding the easel he gasped at the sight of the finished portrait. "You bastard!"
"Well, I finished it about two hours ago, I wager. And now I even get to keep it." he yelled in the general direction of Daniel's vanishing shape.