-3
$\begingroup$

A brewing cup of tea sits on my desk.
Full of water and milk
When I put the cup down I was very careful not to spill a drop
When I came back 2 minutes later, my desk was damp with hot tea.

Why???

Hint: The tea is brewing. Tea bags are in the cup.

$\endgroup$

closed as too broad by Aza Jun 17 '15 at 15:47

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 5
    $\begingroup$ Someone clearly knocked your tea over. What a jerk! $\endgroup$ – Ian MacDonald Jun 12 '15 at 11:53
7
$\begingroup$

Not really sure if this is a riddle as I have had it happen to me :P The tea absorbed up the teabag string and then dripped down the outside of the mug. It usually takes a little longer than 2 min though...

$\endgroup$
  • $\begingroup$ Capillary action ftw $\endgroup$ – JamesENL Jun 12 '15 at 0:57
  • $\begingroup$ Is it physically possible? If liquid enters the string because of capillary action, why would it be going to leave it? This would make a perpetuum mobile. $\endgroup$ – Voitcus Jun 12 '15 at 10:54
  • $\begingroup$ It leaves it because it becomes saturated and the end of the string that is not in the tea allows an escape. $\endgroup$ – Ian MacDonald Jun 12 '15 at 11:53
0
$\begingroup$

The cup is made of paper, and the paper is thick enough so that the desk is only damp after two minutes and not drenched.

$\endgroup$

Not the answer you're looking for? Browse other questions tagged or ask your own question.