A primitive chordate(although superior to sea squirts) that is built for swimming and most breath underwater with gills and have fins (i.e. dorsal, pectoral, etc.) They usually have scales except lampreys, hagfish, and eels to protect them. Their skeletons can be cartilage or bone and come in a variety of shapes, colors,sizes,diets,habitats,reputations,etc. Some of them are primitive, like lampreys and hagfish, cartilageous, like sharks, skates, and rays, and bony,like tuna, clownfish, etc. Did I say that they are prehistoric and lived before the dinosaurs, were the first vertebrates, and evovled from invertibrate worm chordates.
by TanooKirby May 23, 2003
Get the fishmug. Person 1: "Hey, I feel like YOLO is getting a bit old. We need a new word."
Person 2: "How about FISH."
Person 1: "What's that stand for?"
Person 2: "Fuck It, Shit Happens."
Person 1: "OK. Let's get drunk and jump of the empire state building. #FISH"
Person 2: "How about FISH."
Person 1: "What's that stand for?"
Person 2: "Fuck It, Shit Happens."
Person 1: "OK. Let's get drunk and jump of the empire state building. #FISH"
by masterwu July 20, 2012
Get the FISHmug. Someone who kisses the same way a fish breathes, this usually means not well, also causing the the guy to "fish" for the other persons tongue.
by J.1 May 11, 2010
Get the Fishmug. by JimmiF January 6, 2005
Get the fishmug. by fooslayer November 7, 2011
Get the fishmug. 
