According to Frtiz's Hit List, the radio controlled fart machine may be threatened by federal legisation:
When a remote control is pressed, this device emits one of five prerecorded fart noises. Because these noises are stored in digital form, the device qualifies for regulation as a "digital media device" under the Hollings CBDTPA. If the CBDTPA passes, any newly manufactured fart machines will have to incorporate government-approved copy restriction technology.
The hollings legislation is stupid on many counts … This is another such example that it misses the mark.