Championship club Forest got the better of Premier League side Newcastle 3-2 away from home in the second round of the EFL Cup.
The tie finished 2-2 after 90 minutes, with Tyler Walker scoring in the 97th minute of the game to guide the visiting Reds to the third round of the competition.
Cummings was the star of the show for Forest, as he scored twice for Mark Warburton’s side.
The 22-year-old striker joined the Reds from Scottish club Hibernian in the summer transfer window for a fee reported by Sky Sports to be in excess of £1 million.
The former Scotland Under-21 international has taken to Twitter to express his delight at scoring twice against Newcastle.
Cummings has also used a movie reference. ‘Gavin Harris’ is a character from the 2006 film ‘Goal! The Dream Begins’. Played by Alessandro Nivola, Gavin Harris is a footballer who plays for Newcastle United in the movie.