1.) The act of taping a vibrator/dildo , to your head and then proceding to fuck your parnter up the ass or vagina. This method is commonly used to try something new or with a guy that cant hold an erection.
2.) A mythical horse with wings and a horn, comonlly seen in fairy tales
1.) Woman 1: Last night, Kyle gave me a unicorn with my favorite vibrator,it was soo good.
Woman 2: Wow that sounds hot.
2.) Teacher (reading a book): And the prince and the unicorn lived happily ever after.