jargon.artrocity.com
New Hacker's Dictionary the Jargon File v 4.4.6
Something (not a person) that loses; a situation in which something is losing. Emphatic forms include moby loss, and total loss, complete loss. Common interjections are “What a loss!” and “What a moby loss!” Note that moby loss is OK even though **moby loser is not used; applied to an abstract noun, moby is simply a magnifier, whereas when applied to a person it implies substance and has positive connotations. Compare lossage.