"Playing" a computer

Here am I, writing this blog when I should have killing terrorsit bots...I'm playing Counter-Strike: Condition Zero. Then my dad suddenly came and blahblahblah If this were a joke then I would be singing Ke$ha's BlahBlahBlah. He said I had been "playing" since the comuter since three o'clock. I had been using it, not playing. I admit that I had played the game but mostly I had been reading the forum and doing my school project The problem is when my parents find me using the computer, regardless of what reason, they will tell me to stop "playing" the computer. It's just so annoying and frustrating..."playing"....shit