2. Due to the social unacceptance of anal sex in polite society a secondary derived meaning of shitbox is "very bad".
Unsurprisingly the term is derogatory and used mainly by male virgins in the company of their peers during puberty when discussing their as yet unactualised sexual desires and fantasies.
Especially popular in Kent in the mid 1990's "taken up the shitbox" rose to become the favourite phrase of the sixthform boys of Chatham house boys grammar school in Ramsgate, Kent in the years 1996-8.
2. Yes I bent her over my Astra outside Frank's and gave it to her hard right up her shitbox.
3. And did she like it in the shitbox?
4. What the fuck to you think? Have you ever met a bird who liked it in the shitbox? Oh no you are a virgin aren't you.
5. So are you Nigel you lying shitbox.
eg. 2 Shake out your shitboxes, and line up the contents on your bunks, plugs! Inspection in twenty six mike! the Sergeant shouted, booming....
Describes the cars in the Regular Treasure Hunt Series released by Hot Wheels.
Si: "What did you find?"
Davit: "I saw the green stripe and got all excited just to find out it was just a shitbox."