Answer:
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
Surname of the pilot of the Millennium Falcon.
The more you take, the more you leave behind.
When they are caught, they are thrown away. When they escape, you itch all day.
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
What language does a billboard speak?