Why I never stick my hands blindly into anything down here

So, I'm planting new basil this morning and I go to get what's left in
the open bag of potting soil. As a rule, I never stick my hand into
ANYTHING I can't see into; too many centipedes and fang-Landen spiders
down here. What I wasn't expecting was to shake this guy out of the
bag and into my pot. And yes, I squaled like a little girl.