email of the day

last night at midnight my prehistoric, zach morris-ish cell phone took it upon itself to dial my parents house twice. they're on the east coast, so it was 3am their time and obviously my mom freaked out. she heard my voice in the background and realized it was me and called my phone. i was just walking into a bar with some friends so i aplogized quickly and said i had to go. this morning, i find the following email in my inbox:

Spent from 3 am to 4 am last night thinking you had really been taken hostage and couldn't admit it. Called you back but your phone was not on.
Call or email me (if you are alive)
mom

so how long should i ignore her emails and phone calls to let her think i have been taken hostage? i'm thinking a week would be fun.