The topic is german greetings for clowns.  

clowns who make fun with friends. aren´t you a way too serious @Alex?

anyway, you told millions of adults that they were actually 12 years old. I didn´t know that. Thank you! :-)

'Don't generalize it' --> I am really sorry, but that does not make any sense. 

I am really sorry too  but if it does not make sense you could tell me why it does not. I am just a stupid software engineer. but seems you just wanted to blame me anyway. good job Alex. 

Edited for an "o"

@Miriam, same thinking about nr. 4..

but don´t generalise it. It depends always on the situations. For example comedians could like to use some of these kind of phrases... (see the topic)

Yes, Number 4 is in deed vulgar and I would not suggest to anyone to use this wether you say it to a friend or not. 

But number 2 can a man say to another man. but avoid to say it to women as a man!

You will have in every language different opionions of what is vulgar or common. It depends often to your own personality.  

@victoria, correct. a wordplay would be "hallöchen popöchen". 

@all don´t blame me for these bad wordplays please :-D

but the topic is for clowns ;-)

Yes, again, just use it for friends :-D

@Alex, correct. 3, 4 are more for teenagers 

It always depends to whom and in which situation you say these wordplays.

for instance if you say  to a stranger women on street "hey, alles tutti" it would sound like the most stupid pick-up line"

But if you are with colleques at work they will propably laugh or answer in a similar way.

@Shokofe

Alles Roger in Kambodscha? = everything alright in Kambodscha?
possible answer: Alles klar im BH! Everything alright in my bra! 

it´s for fooling around with friends. Just some funny greeting rhymes without meaning ;-)