When someones voice command menu on their phone says "Please say a command," at a non mother friendly moment everyone yells "Call Mom" in hopes that the phone will call the cell owner's mother.
Person 1: Stop hogging that joint.
Person 2's phone: Please say a command.
Person 1+3+4+5: CALL MOM!
Person 2: shit shit shit shit *scrambles to hang-up phone*
(November 20th)- On this day you have now have permisson, by me, to (call your teacher mom)!
(Student) - "Hey, Mom!"
(Teacher) - "Detention!!"
(Student) - "But its November 20th! (Call your teacher "mom") day!"
(Teacher) - "Im sorry, I must have been mistaken! No detention today!"
A variation of the "Mother Insult" type of joke/taunt. My friends and I use this as playful banter.
Person A: Hey, your mom called.
Person B: Yeah?
Person A: Yeah, she wants to know if she can borrow some batteries for her vibrator. (Or something equally disturbing)