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Present tense contraction for "intramuscular" IM; as opposed to IV (intravenous) or SL (sublingual) : In reference to drugs and medications; a route of administration.
I used to boof research chemicals but now I'm IMing them.
IMing by MediaSubliminal May 13, 2020

iming yourself 

When you are bored and have no friends, so you start a chat with yourself.
benjabean1: hello
benjabean1: hello
benjabean1: how are you?
benjabean1: how are you?
benjabean1: fine thanks, how are you?
benjabean1: fine thanks, how are you?

Person walks by, looks at screen, "Dude, stop iming yourself!"
iming yourself by D0M1N8 June 24, 2010

Icing the chocolate cake 

Refers to the German practice of emptying ones' bowels followed immediately by, and prior to flushing, an ejaculation onto said excrement.
The friend was late to the party because he was at home 'icing the chocolate cake'.
Icing the chocolate cake by DuffRD September 29, 2010

Icing On The Cake 

When you jizz on your shit in the toilet before you flush.
Person 1: Bro I had a fat burger yesterday. I need to go ice the cake.
Person 2: Yeah I like icing on the cake when I eat it too.
Icing On The Cake by D1ngus March 21, 2022

Icing on the cake 

When a man takes a shit and then masterbates over the toilet until he comes on his shit.
Joe’s friend at work is pretty strange he got caught putting icing on the cake when he took his 10.
Icing on the cake by SweetRee August 29, 2018

the icing on the cake 

an additional benefit to something which is already good.
Getting a car as a present at 18 was awesome; getting a Porsche was the icing on the cake.