TDTL
To Dumb To Live. This is a standard acronym used in book and movie reviews to describe certain characters. If a character is dumber that a sack of hair they would be described as TDTL. If your protagonists are TDTL then it is time to find another book to read.
I really liked the character John but Jane was just TDTL so I could not finish the book.
TDTL
To Drunk to Live. Used in instances of extreme drunkenness and/or alcoholism.
Person #1: "HOLY SHIT! You just busted your head open tumbling down the stairs!"
Person #2: TDTL!!!! WOOO!!!!
Person #2: TDTL!!!! WOOO!!!!