When you go down on a chick vigorously shaking your head side to side like a rabid dog
I play the body harmonica like a toothless homeless man would eat corn on the cob.
Two guys docking and a girl goes from cock to cock with her mouth.
Dude your mom gave me and Dave a dirty harmonica
When two biological males stand front to front and skotch tape their dicks together. (As supposedly done by Marilyn Manson and Twiggy Ramirez when they wanted one girl to give them both head.)
"Well, there's two of us and one of her... Let's do that dick harmonica then."
13๐ 7๐
Giving a woman a rimjob, and a reach around. Often involves blowing in the butt cheeks.
I gave your sister a rusty harmonica.
20๐ 15๐
A musical instrument consisting of a number of glasses partially filled with water. The glasses are filled to different levels, hence the production of different notes when the player rubs their rims with a moistened finger. The sound thus produced has a haunting, otherwordly quality. It is most famously called for in the "Mad Scene" from the opera LUCIA DI LAMMERMOOR by Donizetti, although that part is now usually played by a transverse flute.
Opera fan A: What's your favourite recording of LUCIA?
Opera fan b: The one with Beverly Sills, because it uses the original scoring for glass harmonica.
15๐ 11๐
The act of two women performing oral sex on a man, while both women slide their lips up and down parralel sides of the shaft.
That threesome was crazy, jill and leilani went dualing harmonicas on me!
4๐ 2๐
When a girl sucks up and down the side of your penis lengthwise, like eating a cob of corn.
Dave: Hey Rocco, where did you and Nikki run off to after the BBQ last night?
Rocco: Oh man, she go so worked up after eating 4 cobs of corn at dinner, she took me out behind the horse barn and played the Ham Harmonica on me!