Disgruntled Porpoise

When you are having intercourse with your lady friend from behind, and you pull out and try to insert in the back door, she cocks her head sideways and says "Enh enh! Enh enh!" like a disgruntled porpoise

I was getting it on with that girl I picked up at the bar last night, and when I tried to get a little Heiney love, she gave me the disgruntled porpoise!