What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

Why is Saturday stronger than Monday?

Find the Odd One Out?
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I am a word of 12 alphabets.

* Alphabets 12, 4, 7, 2, 5 : Eastern beast of burden
* Alphabets 1, 8, 10, 9 are street made famous by Sinclair Lewis.
* Alphabets 11, 3, 6 are past.

On whole it means a person suffering from delusions of greatness.

What Is it ?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Rearrange the letters in "new door" to make one word.

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

Buy me, smell me or deliver me, I do not change.

Who am I?