Mario Williams posted a pic of gun with a silencer with the caption “shhh gnight world”.  Clearly not a good idea.  Silencers are legal in Texas but not in New York, where Williams will spend much of the year after signing a six-year free-agent deal potentially worth $100 million with the Buffalo Bills in March. Williams said on Twitter today that he was in Houston.  Read more after the jump. @Shay_Marie x @gametimegirl