A fork of Rural Dictionary
To suddenly drop a utensil, food item, or both while lifting it to the mouth. Usually followed by an attempt to become invisible on the part of the one that "pulled a Nina" and cascades of laughter on the part of spectators.
Evan: Wow, Haley's cherry tomato is hanging precariously on her fork.
Chris: Oh dear! She's barely holding on to her fork. She will surely pull a Nina in the near future.