Imaginary friends usually come at the age of five or six, don't they?
I know it's OK for Nofar to have a virtual friend, but is it OK for us to have a virtual adoptive son?
Nofar: I'll bring my sister to the party.
A classmate: You can't do it, 'cause she's virtual.
Daddy commented later:
Your friend was wrong. No brothers and sisters are allowed at the party. However, the virtual ones can sneak in unnoticed, while the real ones must stay home.