Dookie
Origin 1
In Scots, dookie, doukit, and douker have been used to refer to Baptists (the terms being related to the British English "duck", equivalent to the American English "dunk", a Baptist being, jocularly, someone who ducks or dunks people in water when baptising them.
Full definition of dookie
Noun
dookie
(plural dookies)- (UK) Baptist
- 1895 Dictionary of the Scots Language http://www.dsl.ac.uk/dsl/snda4frames.php?dtext=snd&query=DOOK
Origin 2
In the US, probably alteration of doo-doo, baby-talk reduplication of do, later popularized by the band Green Day on their highly successful .
Noun
dookie
(uncountable)- (US, slang, African American Vernacular English) feces
- 2002 – Ashaki Boelter: Hate Begets Hate http://books.google.com/books?vid=ISBN0972106731&id=99phDZkAgdwC&pg=PA69&lpg=PA69&ots=PSY2eD5xsG&dq=%22to+get+that+dookie+off+those+ruined+sneakers%22&sig=wbxWie8AeuTdlHTMDte6wXdK9Iw (page 69)"He stepped in some cow waste; it serves him right. Look at him dancing to get that dookie off those ruined sneakers! Ha-ha-ha! Get down homie!"
- 2002 – Jarrett Oliver: Private Eyes http://books.google.com/books?vid=ISBN0595213804&id=PoOEYuGdPVkC&pg=RA1-PA125&lpg=RA1-PA125&ots=B4TI8Ys16d&dq=%22worth+a+lump+of+dookie+%22&sig=Apf_JxL5FDRbU2Ku0oBvOfrPoJY (page 125)"That stuff won't be worth a lump of dookie in court. It wouldn't be at all hard for Geale to pull a few strings and get documented permission for having each one of those items."
- 2005 – Ashaki Boelter: In the Name of Love!: All-4-Love Series 2 of 3 http://books.google.com/books?q=%22So+Alley+found+a+job+Scooping+up+dookie+on+the+streets%22&btnG=Search+Books (Reckless Review)So Alley found a jobScooping up dookie on the streets
- 2000 – The_Simpsons episode ""Bart_Simpson: Can I go to the bathroom?Otto_Mann: Uh-uh! Say it in snowboard lingo.Bart: Uh... I've gotta blast a dookie?Otto: Dook on!