Answer:
What can be big, white, dirty and wicked?
To unravel me you need a simple key, no key that was made by locksmith's hand. But a key that only I will understand.
I can be short and sometimes hot. When displayed, I rarely impress.
My prefix is food. My suffix is rude. My infix comes in rounds. I keep you off the ground. What Am I?
Looks like water, but it's heat. Sits on sand, lays on concrete. A play on the eyes, but it's all lies.
What language does a billboard speak?