If you are easily/innocently grossed out, keep moving through your f-list.
So ninja tech and I are in the kitchen (she's my roomie if you didn't already know) and we we're getting things ready for work tomorrow.  I'm packing my lunch and Clare has an office potluck thing to prepare for.  Clare is making spinach dip.  She has a bowl with a couple cups of mayo and a 16oz tub of sour cream.   She starts to stir them together. 
*squick shlish slupslupslup* 
We both bust out laughing.
 
*slup slup slupslupslup* 

More laughing.

It's slightly sad to be at this age and still laugh (that hard) over such juvenile perversity.  |D

If you don't know what I am talking about....the next time you make something like mac n' cheese, stir it up and think about the last time you had sex.    Regardless of how good or bad it might have been, the sound is still funny as hell.