The complete fear that your band director will chuck a expo marker at you during Band class because you keep correcting them or asking questions that he thinks is being snotty and annoying.
I have severe Expophobia from our hour long band classtoday.
Fear of excretion involving but not limited too: The fear of pissing forever or passing a kidney stone, farting with a suprise terd, crapping and finding out your intestines came with it.
Livingston has bad Excrephobia... always worried that there will be a bloodymess after he craps.