This is the only word which cannot be spelled using a calculator.
For example, enter 376616 into an old-fashioned calculator and look at the number upside down, you can read giggle.
The other words can be spelled using, 7105, 57738, 4506, 3704 and 5355378.
Can you find a valid sentence...
...which has two consecutive ANDs in it?
Direct Link: www.brainbashers.com?ZFFG
Hint: Think of the phrase 'my bucket and spade'.
In the phrase 'my bucket and your spade', the gap between 'my' and 'and' is the same as the gap between 'and' and 'spade', namely one word.
Indeed, this logic can be continued to give the following sentence. In the first sentence the gap between 'and and' and 'and and' is seven words, et cetera.