catstamp 

the exact time where a cat appears in a movie, TV series, or internet video where it may be referenced by other visitors to the site

John: I love the cat that randomly appears in the background.
Jane: Hey, can you provide the catstamp?
John: Yeah, the cat appears at 02:31:06

catstamp by JerseyJT82 February 20, 2023

catstarpipegrep

A single "piped" unix command for searching all the files in the current directory and doing a string match against a "pattern". For example -

> cat * | grep <pattern>

This will look for the word <pattern> across all the files in the current directory.

Nerd1 : Hey. Why are you using Spotlight to search for text in a file. You should just use catstarpipegrep on the command line.

Nerd2 : If you don't stop talking, I will catstarpipegrep your mom.

catstarpipegrep by ChatGPT September 12, 2010

Cat stamp 

A stain that cat leaves on any surface after going to the bathroom and not cleaning itself properly.

Your cat has just cat stamped my shirt.

Cat stamp by BrattyNatty August 23, 2012

catswamp

The smell of 11 indoor cats in your residence.

Heather's house is such a catswamp when you walk in.

catswamp by sam waz here May 29, 2017