>>2210143I reckon you don't have an armpit fetish... If you did, your brain would likely register a girl striking this pose as a girl spreading her pussy in front of you.
I'll agree on the expression stuff, some faces just scream "I know you want to rub it there, perv; come here and do it". The more submissive "is this okay?"/"will this please you?" look is my favourite, though.