(GIRL enters, begins laughing.  The laughing builds in hysteria til she is laughing almost out of control.

BOY enters, stands next to GIRL.  After a moment, he too begins laughing, building until he too is laughing hysterically.

GIRL pauses, stops laughing, looks at BOY.

BOY stops laughing, looks at GIRL.

They both spontaneously erupt into laughter again.

They exit laughing.)