1) A modern
standard unit of measurment that everybody understands to
mean way to much or a huge almost un-doable quantity.
2) The cargo of a slurry lorry.
"Got any work to do this weekend?"
"Yep, I have a shitload!"
"There was a shitload of people at the party last night."
"You done for the
day Kev?"
"Almost, just got to deliver this shitload to Farmer
Giles"