A comprehensive tome of reference and learning on how to be manly. For some, manliness doesn't always come naturally, and the Mansaurus is an essential guide on how to behave in a manly fashion, use manly words spoken in a deep manly voice, and use one's body language to show how manly one is. Many famous manly celebrities allegedly have a copy tucked away including Chuck Norris, Daniel Craig, Russell Crowe, Madonna, Pink, and Fergie from the Black Eyed Peas.
"Daa, I knew I was in love with her da moment I saw her Mansaurus fall out of her manbag as she lifted her leg to fart"
- Sylvester Stallone reflecting on his marriage to Brigitte Nielsen
To shake the drops off after urinating in one single shake.
Only real men can do this, although two shakes is acceptably manly in private. Three or more and you're masturbating, which is not a manly thing to be doing in private OR public.
Don't cry BillyJimBob, I know you loved Ellie May, but I could tell from MattBob's Manshake that he deserved her better. One shake was all it took, and I was watchin' his pants for a wet stain all mornin'.