It is a Mexican slang term for someone who just likes to fuck around and play jokes on people, and/or someone who's always killing your trip and embarrassing you.
Man, Jose really needs to get his shit together and stop being a "caga palo" before he gets his ass kicked, and doesn't graduate.
by Switchblades June 17, 2007
Spanish slang for someone who behaves like a class clown. He can be entertaining and make you laugh but at the same time be ridiculous and obnoxious. Literally translates to "shit on a stick."
Cristian siempre tiene las mujeres riendo porque es cagapalo pero ningunas de ellas lo cogerían.
by diez por ciento March 02, 2005