How to jerk without getting caught?

[Ktothep]

I always wait for my parents to be asleep but one time they walked in so I jumped into bed quickly. My questions for you guys are:

Have you ever been caught? Sorta
How big are you flaccid? 3.5in
How big are you hard? 6.5
Have you ever jerked off your friend? No
If yes, what happened?
Cut, uncut? Cut

[NoviZivot]

Have you ever been caught? almost
How big are you flaccid? 3in
How big are you hard? 5
Have you ever jerked off your friend? No
If yes, what happened?
Cut, uncut? uncut

[Duke Blue Devils]

1. No, I've never been caught.
2. 2 - 3 inches
3. 4 - 6 inches
4. No
5. N/A
6. I'm uncircumcised.

[jack_aus]

Have you ever been caught? Kind of
How big are you flaccid? 3"
How big are you hard? 5.5"
Have you ever jerked off your friend? Yes
If yes, what happened? Were talking about porn and wanking and it happened
Cut, uncut? Uncut

[sdude]

Have you ever been caught? Yes
How big are you flaccid? 4"
How big are you hard? 7.5"
Have you ever jerked off your friend? Yes
If yes, what happened? Were talking about sex in bed and he started jackin next to me
Cut, uncut? cut

[Sean4U]

Have you ever been caught? a few times, yes
How big are you flaccid? 4.5"
How big are you hard? 7"
Have you ever jerked off your friend?yes
If yes, what happened? being gay there are a number of them
Cut, uncut? Cut

[Electrotapped]

Have you ever been caught? Never
How big are you flaccid? 3 in
How big are you hard? 5.5 in
Have you ever jerked off your friend? No
If yes, what happened?
Cut, uncut? Cut

[Giles]

Your further questions have nothing to do with the title or your first question so I'm just going to answer that.

I don't see why so many people get caught masturbating, it's really not difficult to be aware of people approaching your room (or wherever you are). Every home makes some sort of noise when people walk around and when you're in such a position as that you'd expect that you would be extra vigilant anyway. To not get caught just listen more carefully, I've got no doubt that you'll hear people coming.

[Thomas01]

Have you ever been caught? No
How big are you flaccid? 3 in
How big are you hard? 6 in
Have you ever jerked off your friend? No
If yes, what happened?
Cut, uncut? Umcut