look up any word, like donkey punch:
 
1.
A nocturnal emission, or wet dream. Though it happens at any time during adulthood, it's most common among teenage boys. An increase in frequency of masturbation is usually linked with a decrease in nocturnal emission
When the man began to receive sex on a regular basis, his nightfall frequency dropped.
by Alistair Nilsson January 03, 2008
 
2.
A fat eskimo fucker who can also be described as a fat dancer. He uses his insane cocksucking talents to perform dirty sanchez's on all the the SM crew including CT who also enjoys a rusty trombone!
"Man NF has no skillz and enjoys sucking on CT's COCK"
by nigga fo sheezy January 10, 2003
 
3.
A giant orc mage, lives in an igloo.
I was playing Warcraft when a NightFall came in and stole my burrito.
by CombatCarl May 17, 2003