You can help me if you have any funny jokes or really hard brain teasers?

I am really bored and i am doing homework and am thinking of people i absolutely adore so you can help me be keeping me awake so just tell me any funny jokes you have (i prefer blonde jokes but any jokes really are fine). maybe you could also me by keeping my brain awake by giving me very hard brain teasers. thank you all that help me in my time of need