Top definition
Something funny happening at the end of sex, resulting in everyone laughing, like at the end of the original Star Trek episodes.
Right at the end of a really long fuck, Jim pulled out and unexpectedly shot Janice in the eye. Everyone laughed, making it a Star Trek Ending.
by 123starknation December 18, 2011
Get the mug
Get a Star Trek Ending mug for your mate Helena.