What is Kacker?
1.
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!"
