an immature young man

[Spohreis]

Hello!

I am looking for a word to describe an imature young man (or boy) who wants the people believe he is older than really is.

May I use squirt?

Thanks in advance!

[Piscean]

That's OK informally if you wish to offend him.

[kilroy65]

Note the correct spelling of "immature".

[Rover_KE]

I am looking for a word to describe an immature young man (or boy) who wants the people to believe he is older than he really is.

May I use squirt?

Please note my amendments to your post.

I have corrected the spelling mistakes in your thread title.