Shitted or Shat?

Two words, one meaning…but is one better than the other?  To find out whether or not I just shitted or shat, I decided to consult the Urban Dictionary:

shitted – a past-tense of the verb form of shit;

shat - Old English past tense of shit;

Ah, I get it.  If I’m feeling historical I can parody the phrase by using a pseudo-Old English word like shat, but if I want to convey a more contemporary version of the message I could use shitted.  Or perhaps we could combine them to form the ultimate past-tense fecal expression:

shatted – when someone shitted real hard on something;

Either way, your target audience is sure to comprehend any of these words as long you use them in proper context.  Neither of them can validly be considered incorrect, at least until some standards group steps up and tells us otherwise.  That could be a ways off, though, because they’re way too busy trying to decide which of the 261 variances for fart are acceptable :-\

My personal favorite (which didn’t make the cut): squeaky knee