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2.
So-So, not great, not bad, not good
that movie was ho-hum
by paul getts July 10, 2005
 
1.
ho hum is a term used in place of *sigh* and "oh well"
dude1: i am so bored..
dude2: ho hum
by *//...im pretty like drugs...\\* September 28, 2005
 
3.
the vibrating humming sound a ho makes whilst performing fellaito
Damn, Danielle was doing the ho-hum AGAIN last night!
by shorttoplongback December 06, 2010
 
4.
Hohum is similar to the word whorish, except it solely applies to the day.
This day is so hohum, I would sell my danger zone for a hamburger
by Buddy June 22, 2004
 
5.
A verb with exactly the same meaning as to finger (place ones fingers inside ones own or someone else’s vagina for sexual pleasure), but ho hum sounds much nicer.

Ho hum can be used in all of the tenses:
Past - I ho hummed
Present - I am ho humming
Future - I will ho hum
Sally ho hums
Sally ho hummed Jane
Sally wants to be hummed by Wendy
by LuckyLesbian July 28, 2009