When a man (or woman) inserts their fist into a woman's vagina or anus (also could be a male's anus) and proceeds to violently shake them, while still inside, potentially causing extreme vaginal or anal trauma and/or Downs' Syndrome.
Samantha: Did you hear about Jeni? I heard Alex gave her a gnarlyIrish Jackhammer!
Ir·ish jack·ham·mer ahy-rish jak-ham-er (Verb)
The act of a man with a small penis pounding away mercilessly at a woman's vagina in attempt to get deeper.
(Noun) Small penis of any nationality.
I was having sex with this big girl. I had to give her the Irish jackhammer for her to even feel it!
n. A screenshot fabricated by a company to misrepresent the graphics of a game; a combination of the wordsbullshit and screenshot.
Originated from Penny Arcade, a popular gaming webcomic.
-Have you seen Madden 2006 for the Xbox 360? The graphics are gonna be awesome!
-Dude, the Madden 2006 images they showed at E3 were bullshots. It doesn't look nearly as good as they said.
A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."