Feckless

feck·less (fěk'lis), adj.
1. Lacking purpose or vitality; feeble or ineffective.
2. Careless and irresponsible.

[Scots feck, effect (alteration of effect) + -less.]

"Lately Art has been confused with fun-loving but declawed and neutered mutts named Fluff and Feckless."
~ Salute the Rough Guys

More art criticism via street signs at the "Salute the Rough Guys" website.