The Unicorn Bop

The Unicorn Bop is when you place a dildo atop your forehead to where it is secured, and then proceed to headbop with the dildo aimed either at someone's vagina or anal cavity, which thusly results in the dildo being thrusted in and out as if it would during actual sex.

"Ayo, last night was lit!"
"That's right, The Unicorn Bop we did last night was actually very awesome!"