An Australian originated slang word for Aboriginal. The term comes from the stereotype that when an Aboriginal steals a car he will always try to obtain the red one, hence the relation to a Jaffa, red on the outside and brown on the inside.
"Oi Jack! Have a look at the Jaffas by the parking lot, better lock your shit up real well today"
by 7Downeys February 16, 2017
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In British slang it means someone that has a low sperm count. Jaffa is an orange that is seedless (hence the name)

Also in Britain Jaffa Cakes are a type of biscuit/cake that are chocolate covered with a fruit inside

In British slang it can also mean someone with red hair
Bill: Can you have kids?
Terry: Nah, I'm a Jaffa
Bill: What do you mean?
Terry: I'm seedless

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Bill: I'm hungry
Terry: Want some Jaffa cakes?

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Bill: You are a prat
Terry: Well you're a jaffa head
Bill: Don't make fun of gingers!
by CupOfTeaz October 6, 2009
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Someone who doesn’t take part in biscuit society debates
You didn’t take part in last weeks biscuit society debate? What are you some kind of filthy Jaffa?
by Crumb Dumpster June 28, 2019
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Warrior, protector of the system lords regarded as God's in ancient Egypt. Better known from the movie Stargate.
Jaffa protect Ra.
by Ole Scholar February 5, 2017
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Jaffa- A person (boy) with one testi.
Cizza: Hey Brad your a Jaffa!
Brad: STFU!....I have two balls unlike you.
Cizza: Yeah. You wish, is your dad a jaffa too? Lmfao!
by Xx-- Jinxification --xX June 20, 2010
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Something or someone that is so amazing/hot that just calling it amazing/hot would be offensive. Derived from the word "jaffacakes"-which are incredibly delicious.
Example 1:
Dave-That girl is sooo hot!

James-She's beyond hot- she's jaffa.

Example 2:
Kate-That sounds amazing!

Angela-It's more than amazing...it's jaffa
by H-Dot July 29, 2012
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noun -

Someone who's life consists solely of computer games. The word 'Jaffa' comes from these people's main food source, Jaffa Cakes.
'He's such a jaffa'
'No she won't come out with us, she's a jaffa'
by Zakini January 24, 2008
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