2 Year Old (IL)Logic

I was waiting for big brother to finish his bathroom transaction and spotted a spider. Naturally, having two boys and needing to take care of stuff alone, I had to kill it myself.  I pointed it out to my two year old, who being a boy, was fascinated. Then swatted it with a flip flop, and killed it. My two year old kept saying in Arabic, "Spider, yucky!" I told him not to touch it, and turned around to get a tissue to dispose of the carcass.  Two seconds later, I see him picking it up, with his bare hands. I flipped out and yelled at him to put it down, then grabbed a baby wipe (aka God's gift to moms) and wiped his hands, and cleaned up the gooey, dismembered mess. He saw my (over)reaction, freaks out, and starts crying, even though I had CLEARLY told him not to touch it. Only a 2 year old would have the logic of yucky = please touch me, MY logic must be the one that's off...