American Sign Language: "young"
(On YouTube at:  https://youtu.be/I02FA61xpCs )

To do the The sign for "young" brush the fingertips of bent "B" hands upward on (or slightly in front of) your chest twice.

YOUNG: 

Here is another view:

 

 
Notes:

 

Practice sentences using this sign:

YOUNG BROTHER, SISTER YOU HAVE?