In Everyone's life there are things that make you say yuck. Be it really gooey, sticky, slimy textures with yellow chunks within, or a brow and upside down cockroach, your stomach occasionally gets a good roll.
But why those things? Who was it that decided that sticking your hand down the sink drain to unblock clogs is gross? I mean, not to put down those undesirable feelings. I mean, even though they may seem irrational, don't think that I am not scared of Lizards...especially accidentally stepping on and smushing them...
I suppose smushed lizards falls into the slimy icky category, but why are these things gross to us?
An evolutionary response?
Is it related to irrational fears? (is it a fear?)
I don't have a good answer to this one.