Remember your old LSD days?

Remember the old days filled with all those great drugs – including LSD. Well, maybe you don't actually remember,  so here is something to jar your memory:

http://www.neave.com/strobe/

Follow The Instructions
1.- Click on the link below
2.- Then "click me to get trippy"   

3.- Look at the center of the screen for 30 seconds (no cheating), and then
4.- Look at your hand holding the mouse, without moving it away from the mouse.