Playing Barbarian by Psygnosis, watching demos by f.ex. Megaforce, and making my first program in Seka on my friend's A500. "Hey Paul, look, I have this raster line moving up and down until I hit the mouse button!" hehe.
I remember biking through heavy snow all that magical xmas holidays every single day just for a dose of Amiga.
His mom used to stuff us full of pizza and other lovely food. And lots of Cola, of course.