In a large bowl, whisk flour, sugar, baking powder, baking soda, and salt until well combined.
Make a well in the center of the dry ingredients and add beaten eggs, milk, melted butter, vanilla extract, and lemon juice.
Whisk until the batter is smooth and slightly thick.
Fold in sprinkles and stir until just combined - don't over-stir or it color change the batter.
Warm a pancake griddle over medium heat. Scoop out 3-4 tablespoons of batter and cook it for 3-4 minutes.
When the sides of the pancakes dry out, flip them and cook until golden brown for about 1 or 2 extra minutes.
Repeat until no more pancake batter is left.
Serve as a birthday pancake stack with whipped cream or royal icing.