Admittedly my understanding isn't great so take this all with a grain of salt, and feel free to correct me.
'
From what I remember "kun" is the more *proper* suffix for boys (occasionally girls, but this is not as common), and Chan is almost exclusively used for girls. It can be used for guys, but many may find it... emasculating? Chan more or less is a suffix that implies you find the person you're talking about to be cute (not in a romantic way), and is typically used for young children, particularly girls. Basically it wouldn't happen unless you're decently close with the guy and/or he's comfortable with it, or if he's very very young.
'
San is used as well, but it's the equivalent of calling someone "miss" or "mister."
'
Since Elon is making a joke about being a weeb, Chan more or less works as near as I can tell.
'
From what I remember "kun" is the more *proper* suffix for boys (occasionally girls, but this is not as common), and Chan is almost exclusively used for girls. It can be used for guys, but many may find it... emasculating? Chan more or less is a suffix that implies you find the person you're talking about to be cute (not in a romantic way), and is typically used for young children, particularly girls. Basically it wouldn't happen unless you're decently close with the guy and/or he's comfortable with it, or if he's very very young.
'
San is used as well, but it's the equivalent of calling someone "miss" or "mister."
'
Since Elon is making a joke about being a weeb, Chan more or less works as near as I can tell.