Splatterfest 

When one empties his/hers liquified bowels and it sprays all over the inner bowl and the upper rim of the toilet.

I had to use the bathroom, but I chose not to when I saw the person before left a splatterfest.

Splatterfest by MeNthisGuy August 31, 2011

Slatherfest

To slather Jif peanut butter all over one's body for sexual purposes. This can be done with a partner, in a group, or even by one's self. One can try this with Skippy or the generic brand, but the taste and consistency of Jif far surpasses these cheap substitutes. It has the unique ability to be able to go into cracks and crevices much better. A nice glass of cold milk should always be on hand when "Slatherfesting"
Slatherfests can get quite out of hand, The Valentine's Day Slatherfest of 2007 resulted in 12 hospitalizations.

"What did you do last night?"
"Dude, it was a slatherfest, I'll probably have Jif dingleberry for a week

Slatherfest by Nik Balash May 18, 2009

Slatterfest 

A celebratory gathering of friends in honour of Slatterfey. Traditionally held on/near December 13. A great feast is prepared and guests are invited to indulge in complementary greenery and giggle juice throughout the evening.

The first Slatterfest was a great success, nobody could believe the food was edible, let alone tasty!

Slatterfest by ameliaw December 28, 2018

splattercast 

Blood All over the place,
Death All over the place,
Also Known As GORE

omg, why the fuck you saw his legs off with that rusty saw? now it's a damn splattercast up in here....u better clean that shit up pronto!!!

splattercast by InFeRn0__ November 21, 2004

Splattergast 

When sitting down to pee, without noticing that the toilet lid is down and you have to go so bad that you already started letting it flow.

"I was so drunk last night that I Splattergasted myself".

Splattergast by Stpaul83 June 19, 2020