Two lobsters were sunbathing on the beach. The lady lobster suggested that the gentleman lobster to get them an ice cream each.

 

Having purchased two ice cream cones, Mr. Lobster made his way back to the beach, deciding on the way to eat his ice cream. By the time he has finished the ice cream he realized that his lady friend's ice cream had started to melt all down his claw, so he licked it up and ended up eating it.

 

When he arrived back at the beach his lady lobster friend exclaimed, "Where are the ice creams?"

"Well" he said.  "I decided to eat mine. Then yours melted, so I ate that too."

 

His lady friend was incensed and cried, "How could you be so shellfish!"