Russian hammer 

While receiving a blowjob you pull out before you cum and smack the forehead of the person giving you head.

Loren: I was getting a blowjob and I pulled out and gave her a Russian Hammer right before I came!

Russian hammer by Jefflane April 25, 2017

Russian hammer time 

When a male is about to ejaculate and he starts hitting the woman on the head with his penis until he comes.

"dude i heard kari did a russian hammer time with kari!"

" yeah man i heard they went at it hard"

Russian hammer time by EFANG June 16, 2009

Russian Jack Hammer 

A crazy drinking ritual.

1 Russian Jack Hammer:
Hit a big bowl of weed
While holding hit in:
place a caffeine pill on your tongue
wash down with a shot of vodka
chug a beer (usually pabst)
Exhale
Do 5 in a night and its called a 'revolution'

Russian Jack Hammer by steve jacobs2 July 28, 2011