Hard, I don't mind seeing one or two on a profile but when it gets to double digits it's a real turn off.
I also hate when men send a dick pic and ask 'do you want this?'
I'm not a fan of dick pics at all...but a flaccid dick pic is far worse than any other!
I quite enjoy a little peek of a shaft in an "I'm about to pull my pants down and let it spring free" kinda way