The Kim Jong Un

When your balls deep in a american girl, quickly reach out and grab a dildo, preferably one as large as possible. Throw the dildo up into the air so it falls down tip first. As your doing it exclaim loudly: Kim Jong Uns nukes are here! As the dildo or intercontinental ballistic missile (whatever you prefer) hits her in the back, quickly pull out and come into the air. The nut will simulate radioactiv fallout.

Joe: Hey dude i pulled a Kim Jong Un on my girlfriend yesterday!
Bob: Nice man!

The Kim Jong Un: When you pretend a dildo is a missile and your cum is radioactiv fallout