My friend in like 4th grade. I saw him killing a mugger and instantly wanted to kill one too l0l
As soon as I completed tutorial island, I dropped into Lumbridge and started exploring. Ran into a muggler, had the most intense lvl 3 vs muggler fight ever. Ended up just barely beating him, and was overwhelmed with the feeling of triumph/ relief. However that feeling was very short lived as the muggler respawned and killed me for all of my tutorial island items.
OT: I started playing in 7th grade (2004), after overhearing my friend Dan screaming at two of my other friends because they BSed him for full rune + battle axe the previous night...Good times.