Where's Waldo riddle

Question: You create your own Where's Waldo game on a piece of paper. You want your friend to find Waldo but they think you might be pulling a prank on them by not putting Waldo on the paper at all.

How can you prove to your friend that Waldo is on the paper without ruining it for them?

Question: What do you get when you cross a cheetah and a burger?

Question: I'm 10 years old my brothers half my age now I'm 100 years old how old is my brother now?

Question: What tastes better than it smells?

Question: What goes in the water black and comes out red?

Question: What loses its head in the morning and gets it back at night?