Halley on 

Halley on - as in Halley's comet

simply means to: keep up the good work, carry on, more power to you, party on, keep on keeping on - as in to persevere

keep on keeping on, or carry on, party on

I've been following your extensive work and now a new non-profit you've started.... Halley on, girlfriend! Love you

Halley on by kesacare July 1, 2018

Mouse on a Harley 

A diversionary excuse used when caught farting in public

John was standing in the break room at work and tried to sneak one out.
Jane walked in and having obviously heard it made a face at John.
John said, "Did you hear that? Must have been that mouse on a Harley again."

Mouse on a Harley by Miggity Miggity May 22, 2018

Mouse on a harley. 

A rough sounding fart that you make while sitting on a leather seat.

"Is someone using a jackhammer?"

"No, it was a mouse on a Harley."

Mouse on a harley. by impasta_pasta October 21, 2014

Harley, Ontario 

Drive South of Brantford until you hit what seems to be the dirtiest hick town hole youve ever seen (Burford) and keep goin' until you've past that and hit an even smaller, even hickier, even dirtier town than that one (if thats possible). Once you get there you know you've reached the town of Harley and I suggest you turn around and leave immediately. Harley is the butt hole of the entire world.

Wanna go mailboxin in Harley, Ontario man!? Ya man that place is a Dump!

Harley, Ontario by scotlander1 April 25, 2011