A sexual act that involves using a model train set to be involved in love making such as jamming the model train conductors into the urethra or fitting the entire train with its cabs into the vagina

It can also be described as thrusting extremely hard while having sex, screaming at the top of your lungs "CHOOOO CHOOOO" and cumming all over said persons face, ass or vagina
I think me and Cindy are gonna do some Train-Yard Blast tonight"
by FingerPuncher May 30, 2017
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It is when you are having sex and she rides you so good that when you pull out you nut powerful enough to paint the whole room and everything in it white.
Me: I was fucking this hoe raw last night and she was riding me like a Bugatti and I released the sonic blast and she was covered in my cum.

My friend: What?! I’m sorry dude. You need to find the right girl who could swallow it all.

Me: Don’t worry man I left that bitch on the front step for her dad to scoop her. Her dad will explain to her the importance of swallowing it all.
by Bigbob313 August 8, 2018
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When your so obsessed with your new gun you fuck your gf with it
bro, this new Glock is so awesome I barrel blasted my wife’s pussy with it! She was cumming all in the barrel
by Owens31490 February 18, 2022
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When a person aggressively fingers their ass at maximum volume
by Asher Woney September 30, 2023
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when your fingers are bigger than your penis
“wow dave did you put your penis inside her?” “no man she said it was too small so I was stuck finger blasting her instead”
by heiwhduxhehw March 23, 2018
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A sexual move, before climax, slap your partner's face, then ejaculate all over them. Not to be confused with Cyclops' mega optic blast, the X-Man Cyclop's special move in Marvel VS Capcom
Tina: I broke up with Jim yesterday
Heidi: What? Why?
Tine: He smacked me in the face with his dick mid -intercourse!
Heidi: Oh shit! He did a Cyclops Mega Blast? That's so hot!
by Farqunglu April 20, 2016
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The tourist were all up in the trendy restaurant camera blasting. Posting that shit to FB!
by SayMyNameBiotch April 22, 2018
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