Sandals are fucking weird, might as well just wear a shoe.
Flip flops I wear in beach like situations or while washing my big and beautiful truck. Also, there are a few (infrequent) instances in which I will wear them to a place (doc appt, groceries, what have you). However, I am always wearing shorts.
I will not wear them with pants.
I will not wear sandals unless maybe I was boating or something that required me have something fastened to my foot (flip flops dont have a good hold).
Sandals (of any sort) an socks are worse than flipflops and pants
Pants and flip flops = weird poser "O.C. scene" kid