We should focus on positive and healthy topics such as friendship building, mutual support and common hobbies in friendship, rather than such vulgar topics.
First, make it clear that you don't want to engage in such a conversation. You can use humor to defuse the situation a bit, like 'Whoa, that's way too much information! Let's talk about something else, like that new movie we were thinking of seeing.' This way, you're gently redirecting the conversation to a more suitable topic without making your friend feel too bad.
Well, if not in a vulgar sense, 'jerk off' could be used informally to mean 'fool around' or 'be silly'. So a 'jerk off friend' might be a friend who likes to be a bit goofy or play around in a harmless way.
Well, a common first time might be a bit fumbling. You're not really sure what you're doing at first. Maybe it happens in the privacy of your bedroom, late at night. You start to explore your body and figure out what feels good. It can be a bit nerve - wracking but also exciting as you discover something new about yourself.
No, it is completely inappropriate. Such behavior involves sexual and private matters that should not be done in the presence of a friend. It violates social norms and the boundaries of a healthy friendship.
No, it is completely inappropriate. Such behavior violates social ethics and moral boundaries, especially when one is married. It can also cause harm to many people including the spouse and family members.
The most obvious consequence is the destruction of the marriage. The spouse of the married friend will likely be deeply hurt and lose trust in their partner. It can also lead to social ostracism as this is not an acceptable behavior in society.