self-licking ice cream cone
n.— «CHAIR THERRIAULT said the account has been characterized as a self-licking ice cream cone in that no one gets to derive pleasure from it. The proposed mechanism is the only way for the state to derive benefit. The underlying question is do we have to continue to allow it to self-lick?» —Alaska State Legislature Senate State Affairs Standing Committee Mar. 31, 2005. (source: Double-Tongued Dictionary)