Open Question: Is it bad to masturbate 4 or 5 times a day?

I know this question is asked a lot too, and have investigated a bit but I never really get a straight answer…

So simple question.
Also
Does it mean that if you masturbate that much a day, it will be harder to ejaculate, like you grow a bit of a resistance, as in 20 mins now takes 1 hour or something….

Will it make it smaller in the future…?

Also one last thing is it bad to go about 3 times in a row (Erection wont go down and since the you know “Movie” is still going may as well make the most of it)…

(If anyone says “Oh my god perverted” I know I aint, like 100% of guys do it, there has not been a time where a guy has not done it! This may just be a bit more than usual -.-)
(If it helps, I am 18 and a virgin)
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