Because you asked for it, here is a phone number that will probably call you at 3am:
1-2-3-4-5-6-7-8-9-0
Or, if you'd rather call your ex:
1-800-GET-HUG
Phone numbers follow these patterns:
\d{3}-\d{3}-\d{4}
Or, if you're feeling fancy:
+\d{1,3}-\w+
Don't call your mom with a number like this, trust me.