A senior citizen, especially one that is verging upon infirmity and /or isn't completely aware of his/her/its surroundings or what constitutes appropriate contemporary behaviour.
Cf:Ger: "alte Kacker", lit. "old shitter"
"Yo! I hate it when those kackers can't read the "15 Items or less" sign at the express checkout."

"Change lanes right now. That kacker shouldn't be behind the wheel!"
by SWIZZBO February 14, 2004
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A slang term for very strong marijuana. The kacker is commonly known to make the smoker cough severely upon inhalation.
Senior: Hey you guys got the kacker!?
Kurt: Standard
by The Achievers January 27, 2013
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One that cacks ( shits) their pants at the first sign of trouble.. ( South Essex parlance)
by Cidremonkey February 6, 2021
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