I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

Why is it very easy to weigh a fish?

What has one eye, but can’t see?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

Who always enjoys poor health?

Can you make a six-letter word using the letters N, A and B ?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.