When you're having sex with a chick that you know doesn't like anal
and attempt to sneak it in her ass. She pulls her ass back, shakes her head no and makes sounds like
a dolphin, "Ahhkaa Ahhkaa
Ahhka"...hence the dolphin tail.
Man, last night I was fucking this
hot chick Tina, I attempted to hit the back door
and she cock blocked
me with a Dolphin Tail!