A surprised pirate is where someone is giving a guy a blowjob and he cums in their mouth without saying anything, the person then gets angry and spits the cum in his eye and kicks his leg making him into a surprised pirate. Also known as a reverse angry pirate or a rap for short.
"Dude I was getting a blowjob from her and I came and she made me a surprised pirate. My eye still burns and my leg is bruised."
A comical sex act in which a man getting a blowjob shoots his load into a woman's eye, causing her to reach up and cover her eye like a patch. He then kicks her in the shin causing her to hop on one leg and scream arggggg!
She didn't want to swallow, so I pulled out and hit her in the eye. I kicked her shin, so while she was one leg, yelling, with one eye covered, she looked like a crippled pirate.