What is coming out of my mystery snail?

[NekoOo]

The picture quality isn't good, but it appears to be weird little yellow things held together with a whitish slime that is coming from my snail. I thought mystery snails had to have 2 to breed and they lay their eggs above the water line? Knowing this, I have no idea what's coming out of him if it's not eggs. Any thoughts?

 

[Bubbles0oO]

Dont worry. Its just poop lol. My mystery snails poop all the time. When they lay eggs they will be much larger than that.