When you conflict with someone/something, maybe in a argument or feud and you are 'at heads with them'. Like in a competition, you go 'head-to-head' with your opponent.
by SillyPhilly October 07, 2013
An alternative to a traditional all male threesome, when only two males are available. The middle participant in the threesome is being anally penetrated while simultaneously inserting his throbbing member into a Chicago style deep dish pepperoni pizza.
by sillyphilly September 28, 2015
the act of plunging one's erect penis into a nalgene full of warm cheese wiz and/or Philadelphila cream cheese
Since my girlfriend was out of town a Philadelphia Snowplow wasn't in the cards so I decided to treat myself to a Philly Nalbone instead.
by sillyphilly July 07, 2015
The act of plunging one's erect penis into a Nalgene full of warm cheese wiz and/or Philadelphia cream cheese.
My girlfriend was out of town this weekend so instead of engaging in our usual Philadelphia Snowplow I had to resort to the ole Philly Nalbone.
by sillyphilly July 13, 2015
by sillyphilly November 20, 2015