The act of just whipping your dick out while talking to a
girl that may or may not be interested in doing something with it.
Yelling "Whoop there it is" could potentially be appropriate depending on the setting.
Usually this is appropriate during
long boring stories about trips to the mall with her friends, the wnba,
reading... etc. which no, especially not you cares about.
If you run in to issues with the reaction, it is usually helpful to say "Whacha gonna do with it? Whacha gonna do with it? Can't do nothin, can't do nothin."
The word is derived from the
lyric "Whooop There it is"