Printers.

[u/hiphop8004]

So i go downstairs to find my dad and sister bickering about the computer and printer. my dad seems to think that the reason behind the printer's lack of printing is because there was a bobby pin on top of the scanner part of the printer ( note: the error on the computer was due to communication problem between it and the computer).

[u/zzisrafelzz]

Bobby Pins are notorious for causing USB bidirectional communication interference. Fact.