Long and Thin

Long and thin, red within,
With a nail at the end.

What am I?

A finger.

Posted in Riddles

Lighter Than a Feather

I’m lighter than a feather but even the world’s strongest man can’t hold me for more than a few minutes. What am I?

Breath. Air is light, but even Stig Severinsen, the world record holder can only hold his breath for 22 minutes. The world’s strongest man can’t beat that, but you can have the pleasure of telling him to his face.

Posted in Riddles

Made of Ten But Two We Make

Made of ten but two we make,
When assembled others quake,
Five apart and we are weak,
Five together havoc wreak.

What are we?

A fist.

Posted in Riddles

I Always Send You In The Right Direction

I always send you in the right direction,
I’m arrayed in black and white,
Ignore me and lose my protection,
No more than two words are in sight.

What am I?

one-way

A one way street sign. It tells you the correct way to go, is black and white (in the United States), going the wrong way can get you a citation and the sign only has two words on it.

Posted in Riddles

False Positive HIV Test

Imagine an HIV test that is 95% accurate (false positive rate of 5%) and around 2% of the tested population is infected with HIV. What is the probability that you actually have HIV when your test comes back positive?

29%

To read more about this, see the False Positive Paradox page on Wikipedia.

Posted in Brain Teasers

Tear One Off And Scratch My Head

Tear one off and scratch my head. What once was red is black instead. What am I?

A match.

This is a duplicate of red black instead, but I’m leaving them both to avoid broken links.

Posted in Riddles

Forward I’m Heavy

Forward I’m heavy, but backwards I’m not. What am I?

Ton.

Posted in Riddles

A Blank Old Woman

Fill in the blanks with the same 4 letters to make 5 different words.

A ____ old woman on ____ bent, picked up her ____ and away she went. “____ my son” she was heard to say, “what shall we do to ____ today?”

A vile old woman on evil bent, picked up her veil and away she went. “Levi my son” she was heard to say, “what shall we do to live today?”

Posted in Brain Teasers

Days of Summer

My days are in the summer
When you’ll eat me when I’m hot
In fact I’ll even eat myself
Where battles tough are fought
But when you find me in a fight
‘Twill be high in the sky
And if you catch me napping
I suggest you let me lie
When you’re bad come to my house
From Ma get thoughts profound
Am I big or am I small?
Some say I’m just a pound.

Dog. Dog days, hot dog, dog pound, dog fight.

Posted in Riddles

The Shortest Sentence In the World

What is the shortest sentence in the English language?

Jelly donuts (ice cream is better)

The typical answer to this is “I am,” but some argue that it’s not a complete sentence. However, if someone asked a man named Rupert if he was Rupert, he could reply, “I am” and it would make a complete sentence in my book.

But that’s not the whole answer. There is an even shorter sentence using an imperative with an implied subject (how’s that for an English terminology-filled sentence?) With “Go,” the “you” is implied. For example, if your wife wanted you to go with her to pick up some donuts and you were busy, she might say, “I really want to get some donuts, I’m starving!” and you might reply, “Go!” The implication being you never wanted to get donuts in the first place because you like ice cream more anyway and if you’re busy you’re probably doing something worthwhile and important and can’t be disturbed for such trivial matters as acquiring sweet pastries with holes in them, no matter how much of a waste of time your wife says your pursuits are. In short, “Go” is the shortest sentence in the English language that also has the longest implied meaning. Do you want to get get some ice cream? Go!

Ava pointed out in the comments that No is another viable alternative.

Posted in Brain Teasers