Improvised biological warfare 

When you cough or sneeze on someone to spread a disease or virus

Hey Ben I just used improvised biological warfare on the antivax kid and gave him covid-19

Improvised biological warfare by Nukey dukey March 12, 2020

improvised vibrator 

Using house hold objects as a vibrator or sex toy.

I used my electric tooth brush as an improvised vibrator

improvised vibrator by YoBoyHank October 20, 2015

Improvised Explosive Device

When a guy knows that he is about to get a blowjob from a girl he doesn't like, and has adequate time to prepare, he can masturbate just to the point of ejaculation. Then, the man would have the woman get on her knees while she takes off his pants. If executed correctly, once the woman reveals his member and takes hold, he will cum in her face, causing her to be left very messy and surprised... Allah Akbar!

A slut comes over thinking she's going to get to suck some dick. To her surprise, she is about to be booby trapped. Once she gets the dick out, it explodes in her face like a roadside bomb, also known as an IED, or Improvised Explosive Device.

Improvised Explosive Device by Dumpusfuck September 27, 2007

Improvised german 

The ability to make up fake German words on the spot and to say them in such an angry tone it sounds like a national socialist rally

Todd: *using improvised German* “GESPACHT UND GENÄSCHT, DIE WÖHTGETRUNKEN IM DAS GEMÜGE!
Steve: *compelled to salute* “HEIL”

Improvised german by Cum faggot May 20, 2019

Gimprovise 

To improvise badly, an idiot trying to provide a solution to a problem

The boss is furious, Gerry gimprovised on the bug problem and made it worse

Gimprovise by Steve Adams January 9, 2009

Improvised Expletive Device 

In the Bible (apparently) it says somewhere "Thou Shalt Not Swear" Latter day Christians have discovered a small foot note to this verse that adds "... using commonly accepted swear words".

Thus the Improvised Expletive Device (IED) was born, replacing commonly accepted swear words with any other word - thus not swearing!

"Oh (can't say f$*K so insert Improvised Expletive Device) Folly - I've just hit my hand with a hammer"

"Jeepers - that was close!"

"Oh Shucks - I wanted to say that"

Improvised Expletive Device by Tra_j_d September 30, 2009

Improvise 

The action of using innatimate objects, preferably ones that vibrate, to masterbate!

Maria improvises all night long.

Improvise by The locos January 22, 2009