This nis based on a joke I heard years ago.
SOUND OF PHONE RINGING
Boy: hello?
man: hello son, it's dad
boy: DAD, where have you been it's been ages!
man: I know son but I'm still away on business and I just need to talk to your mom, is she there?
boy: she's still in bed with Uncle Dave, shall I go get her?
man: WHAT!!! Who's Uncle Dave?
boy: He's been here every night since you went, don't you know him?
man: No I do NOT!!! (long pause while he begins to sob into the phone)
boy: are you ok dad?
man: (voice trembling) look son, I need you to be very brave for me now and do something bad, you're the man of the house while I'm not there and this needs to be stopped.
boy: (nervous) err... ok Dad what is it?
man: you know where my gun cabinet is?
boy: (shocked) yeah
man: I want you to go get a gun, load it up, and put an end to their fun and games!
boy: (crying now) Ok dad here I go!
WE HEAR THE PHONE BEING PLACED ON THE SIDE AND FOOTSTEPS RECEDING. THEY RETURN AND, AFTER A SECOND, THERE'S A SCREAM AND THE SOUND OF A GUN GOING OFF. THEN WE HEAR MORE FOOTSTEPS, PLEADING, ANOTHER BLAST AND A CRASH AND A BIG SPLASH.
boy: (very distraught) I did it dad!! I did it for you, they're Both dead!!!
man: that's my brave boy, what happenned?
boy: (through his tears) well I nailed Mom on the bed but uncle Dave managed to get past me so I chased him downstairs and shot him in the hall, he went straight through the patio doors and landed in the swiming pool... it was HORRIBLE!!!!!
(beat)
man: Swiming pool?... err sorry, is this 3547866?
You're wife's a bigfoot isn't she Gus?