Earwig behavior?

Man these creepy-crawlies are gross, last night one was crawling on my computer desk and made its way on top of a computer speaker, here it raised its abdomen/pincers into the air and stayed there. I tried googling this behavior but no results. Does anyone know what this bug was doing or trying to accomplish?

This was the best place I could think of to post, I may go to some sort of insect forum if noone here has a clue.

Sounds to me like he was challenging you to a fight. "Put your dukes up!"

From what I know of earwigs its a defensive display. Then again apparently they don't actually crawl in ears if given a choice so its weird how they get their name.

He was attempting to intimidate you into not crushing him dead. (Did it work?)

Maybe it was trying to initiate foreplay?? lol