The fear of awkward moments. People usually develop this as a result of a teacher or boss saying/doing something accidentally inappropriate, causing all observing students to be awkwardly scarred.
Often a vicious circle, as 'I think I have awkwardmophobia' usually leads to a long awkward silence among friends.
Teacher: I won't be here Tuesday, class. I have to drill some holes in my bedroom.
Dude 1: THAT'S WHAT SHE SAID!
Dude 2: Oh shit, think I peed my pants. Stupid awkwardmophobia.