krackass 

The act of either bending over or crouching and exposing the crack created by their large butt cheeks.

Mike just had a krackass moment.

krackass by Mike kraski September 10, 2010

soft knacka 

Not very hard...weak...a fanny...soft as shite!

'Man I'm scared of fighting him...hes way too tough'

Get in the ring now you soft knacka!

soft knacka by Stacey Mac October 28, 2019