When your buddy butt-dials you right before he starts having sex allowing you and all your friends to laugh as you hear them having sex.
Girl getting railed: Uhh uhhh
Dude getting laid: mehhrr
Dude 1: dude my friend just butt dialed me
Dude 2: it sounds like there knockin boots man
Dude 3: definately
Dude 1: maybe he's givin her the montana muzzleloader
Dude 2- no man, shes gettin the Montana Telegram
Dude getting laid: mehhrr
Dude 1: dude my friend just butt dialed me
Dude 2: it sounds like there knockin boots man
Dude 3: definately
Dude 1: maybe he's givin her the montana muzzleloader
Dude 2- no man, shes gettin the Montana Telegram
by montanas expert May 21, 2011

by Fishtits February 15, 2017

the act of riding a female doggy-style while whipping pelvis in a circular motion much like a lasso in an attempt to catch the vagina with testicles. If one or both balls penetrate or are engulfed by the vagina a montana lasso has been performed.
Bob: While hitting it doggy-style I started dipping my hip in a circular movement so my balls would swing up and I could montana lasso Alexis.
Chris: Did you montana lasso her?
Bob:...almost
Chris: Did you montana lasso her?
Bob:...almost
by Billingsley Kipling Cooper II June 8, 2010

by joben27238904327403743470324 October 20, 2010

A person who looks like the majority of women from Montana. This stems from the fact that the instant you cross over the border into montana, the attractiveness of the female population instantly decreases. Therefore, someone who is a ten in Montana is a five in other states. Or a three. Probably a one.
Broseph: "Hey, dude, did you go out with that chick you met on eHarmony?"
Brohommed: "Yeah, but her profile pic was fake, she was a total Montana Ten."
Broseph: "Lol! Are you going to see her again?"
Brohommed: "F**k that, I'm not going to even talk to her"
Brohommed: "Yeah, but her profile pic was fake, she was a total Montana Ten."
Broseph: "Lol! Are you going to see her again?"
Brohommed: "F**k that, I'm not going to even talk to her"
by Crims0nSamurai August 6, 2011

by thunderokoboi October 19, 2012

A large mirror attached to the side of a computer monitor. In states other than Montana, the mirror is used to know when someone is entering your cubicle or office. In these cases it would just be known as a mirror.
In Montana, the mirror is used for anal intrusion detection, because when you are in Montana you are always watching your back.
In Montana, the mirror is used for anal intrusion detection, because when you are in Montana you are always watching your back.
"My Montana Mirror saved my ass again last night on 2nd shift. I looked up and saw the janitor whipping it out behind me just in time. "
"Damn man, get outa my Montana Mirror you fag! I'm not a sheep. Get that Montana Stick outa my cubicle! I'm calling security."
"Damn man, get outa my Montana Mirror you fag! I'm not a sheep. Get that Montana Stick outa my cubicle! I'm calling security."
by Dag Mango May 5, 2013
