This might seem old fashioned of me, but
there's this rule on the PLA Forums that states, "Although we love prank calls here, we do not promote the abuse of emergency services for the sake of a prank call. Do not make prank calls that will directly or indirectly affect 911, police, fire, SWAT, or other emergency services. SWATTING, bomb threats, and threatening phone calls will never be tolerated here."
Also, doesn't it seem kind of dumb to put calls up where you harass police and fire departments? Skype can be traced. YouTube can be subpoenaed to get your IP address. Stick to fun, innocent pranks!