You must be horribly scarred to think that anything that looks like yellow ooze= pus, especially if that's the first thing you notice in the picture. My first thought was urine which I don't even find disgusting.
Truly, it does resemble pus moreso than urine. And anyone who's been on the internet long enough has probably seen more pus and related pain-series-esque things to at least have a decent comparison. At that, I must say that this pic would be hot if not for the... pus/urine/stuff.