I’ve always enjoyed
pinching a loaf
launching a mud rocket
dropping a sewer pickle
Expelling a column of feces
Those are a few of my favorite things
Past tense:
Pinched a loaf
Launched a mud rocket
Dropped a sewer pickle
Expelled a column of feces
Language can be soooo melodious. 
Did not.
That was basically my point, derived from my antiquated major professor in grad school. So nice we actually agree.
Yes. Bullshitted can have a negative connotation, though, as well as the positive equiv. of ‘shot the shit.’ Like “He was bullshitting me” vs. “We were bullshitting.”
Mind the context for discernment.
::giggle:: He said **left behind ** in a thread about shit.
Not in England we don’t - we “have a shit”. It’s already ours.
Personally, I prefer “download a brown load”, but the past tense just doesn’t roll trippingly off the tongue…as it were…
Past of shit ? Defecated 
. I was defecated upon by gulls when visited Farallon Islands.
By the way, shitehawks are skuas (genus Stercorarius), also called dung-teaser dung-bird, scait-bird, shite-hawk (in Strangford); Swedish sket, Greek skatos “excrement”, and Gothic skita “to defecate”, and Scot. skite “to mute”, from the widespread belief that skuas harass gulls in order to eat their droppings, while in fact it is the disgorged fish .
Your professor, if he said anything to suggest that “shit” is somehow not a word, was a moron. I’m more inclined to think you’re talking out of your ass here, though.
The Etymology of Some Obscenities says it’s from the Old English “scitan”, from the Indo-European root “*-skei”, to separate or divide. I’m not familiar with that website but it jibes well with the etymologies of the word that I’ve heard before (it most assuredly is known back to the Old English period.)
I’m quite curious where you heard all this bullshit (:)) about “proper English”. What was your major, anyway, in which this professor filled your mind with such falsehood?
Language is defined by how it’s used. The people speaking the language are the ones who “created” it, and English survived for many hundreds of years before ruler-bearing teachers and 18th century “grammarians” (and I use that term in scare quotes to point out their tenuous grasp of grammar) came up with the (often arbitrary) rules of “proper English”.
I don’t know much about Old English, so I don’t know about the different ablaut paradigms; I normally use “shit” as the past tense, but I’m familiar with “shat” and it may well be the more historically accurate form. There are various forces that conspire to change word forms; it probably shifted on analogy from other words; as has been pointed out, there are words following both paradigms - “sit, sat, sat” and “hit, hit, hit”.
Etymology from the OED:
“The form shite represents OE. *scítan, pa. tense *scát, pa. pple. -sciten (in be-sciten), corresponding to OFris. *skîta (NFris. sk{ibreve}tj, pa. tense skäd, pa. pple. skedden), MLG. schîten, Du. schijten, OHG. scî{hgz}an (MHG. schî{hgz}an, mod.G. scheissen), ON. skíta (MSw. skîta, Da. skide), f. OTeut. root *sk{imacbreve}t-. The now more common form shit is influenced by the pa. pple. or the related n.”