If chickens wake up when the Rooster crows, then when do ducks wake?

At the quack of dawn.

Doctor: You need new glasses.

Patient: How'd you know? I haven't even told you what is wrong with me yet.

Doctor: I could tell as soon as you walked in through the window.

Why did the boy study for his math test in a tree?

Cuz he wanted higher grades.

Q: Sex is great, only your mate can sometimes be a little nuts!

( I am still a single young virgin )