Brooklyn artist D.Billy has created several site-specific installations around the city using balloons as his primary medium.

He writes:

Using colorful media such as twisting balloons, party streamers, and artist tape, I have begun to add visual representations of sound effects to public spaces as a sort of dimensional graffiti. After embellishing the found scenes and photographing the results, I leave my additions in place to engage passers-by for as long as the materials hold up. For me, this process encourages a reexamination of surroundings and objects that are usually taken for granted, and injects a hint of the fantastical surreality that I have established in my other work.

Or, at the very least, I hope someone thinks these things are kind of funny.

via Laughing Squid