killer mike

A "rapper" that nobody has every heard of. Stole the album of the year from travis scott.

"who won the album of the year?" "killer mike" "who?"

mountain killer

Person who habitually chooses the same ascent route on a mountain, chipping at its face more each time, thereby destroying more of the mountain on a climb.

Richard, why not use another route to climb that mountain? Leave that route so others can enjoy it. You're a mountain killer!