Hard as a motherfucker. One can go haam for anything: Sports, homework, smoking, sex, drinking, driving, etc.
In the rugby game today, I went haam and hit this kid so hard he had to get carted off
by Neyo2k10 April 28, 2011
2 more definitions
To Be At An Extremely (Dangerously) Intense High Usually Caused By High Quality Marijuana Or Other Drug.
I Don't Know What Strain Of Weed Was In The Bong, But Everyone Who Hit It Got HAAM
by David Roche July 21, 2011