I got a pink onsie that said daddy's little girl. Wrapped it up and told him i just got a gift cause i love him. He was super excited and surprised.
They would either dye the actual cake using food colouring and put a neutral colour icing on the outside. Or make a double layer cake with the colored icing between the two layers with still a neutral colour icing on the outside
How does it work lol dumb question
Do the cake thing. Where you have a bakery bake a blue or pink cake and your hubby can't cut it to see the gender