Kerri Walsh -- I'm Playing with PINKEYE!!!

Apparently, someone farted on Kerri Walsh's pillow ... 'cause the U.S. beach volleyball superstar has come down with a case of the pinkeye at the Olympics.

Walsh talked about her eye issue at a media event in London yesterday -- wiping the tears and gunk as she told reporters the conjunctivitis won't stop her from dominating in the sand.

"It's super minor ... it looks worse than it is."

Kerri's pro-volleyball playing hubby Casey Jennings also has the pinkeye ... but, according to Kerri, it's much worse than hers.

"It looks like his eyeballs got their butts kicked."

**Sidenote -- the chances of getting pinkeye from someone farting on your pillow are very low ... it's just an urban legend perpetuated by the movie "Knocked Up."

Still, don't fart on anyone's pillow, it's just mean. **