Filter: in the tradition of replacing profanities with more innocent words, the word "filter" has appeared in various expressions at the beginning of the 21st century. Origin: unknown, but may have begun on the Web.
Examples from popular novels published from 2010 to 2020:
"I am going to kick your filter so hard that you won't be able to sit down for a week."
"Get your filter car off the street if you can only drive like a filter!"
"Filter your mother and filter your sister too!"
"You lowlife filter!"