Catesp is used to define a human who loves cats. This term is used to keep strangers of by saying that they are not interested in them because they are CATESP :)
A term derived from the free game "Dwarf Fortress," explained on the official Wiki of the game that it is the slowing down of the game's frames per second rate as a result of having too many cats on one screen, usually avoided by not taking more than a singlecat on your adventure. Catsplosions have also been known to be harmful to the dwarves in the gameplay if you try to reduce the cat population.
A small Catsplosion had occurred in Will's fortress, and when he tried to control it, the dwarves of his fortress became sad and threw tantrums, destroying property and causing an amusing, yet painful-to-watch chain of tantrums that inevitably led to the fortress' demise.
Nonsensical or glaringly incorrect grammar usage, usually found in internet typing. The presence of catspeak usually indicates that somebody let their cat use the computer.
Catspeak is used by non-cats, for humorous effect, in cat-themed image macros.