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Smo = Humpie.
A strange biped humanoid who is prone to revert to his alternate personality when it is least expected.
"Is it Humpie? Is it Smo? Is it an incredibly obscure transsexual? We can't tell, and neither could you."
Smo by Some Rando February 16, 2004
Related Words
smoke smol bean smol smoothie smos smooth smoked smokey smoosh smoo
adj:: so straight that the word straight is too unstraight to describe it.

Antonym:: unsmo
Girl 1: Oh my god you're so hott.

Girl 2: Um. I'm smo, thanks.

Girl 1: Oh. I'm sorry. I was unaware.
smo by Made line February 19, 2009
Social Media Optimization:

The art and science of maximizing content on task-appropriate Social Media outlets. Generally in support of a Reputation Management campaign.
Automotive Dealer: Can SMO drive buyers to my website and inventory?

WebDeals: Yes, SMO is an excellent method of controlling search results regarding your company, car line(s), location and even your competition!
SMO by WebDeals August 2, 2008
Nobody actually knows what the hell this means, but we think it's the act of being mean. Contrary to popular belief, smo is NOT the act of being mean, nor it is "suck my ovaries" or whatever definitions there are.
Smo is just..smo.
Can be used as an adjective, noun, and a verb. All at the same time. That's right.
Osaka- Smo on!
Created when i was pissed and arsed moving.
Look fuck off u wanking smo.
Im so smo?
Meeeeh smo me plz
Smo by rob August 4, 2004
smo is an acronym for "sarcasm may occur", to state the not always so obvious texty sarcasm out there, used whenever a smiley/emoticon doesn´t quite cut it. :P
1. I know losing your eyebrows is horrible, but at least you're pretty smo

2. person 1: hey can I borrow your car, while mine is at the workshop?
person 2: yes by all means wreck mine too then none of us can drive... smo

3. I just love that I can always depend on you, knowing you got my back when I need it, smo fucker
smo by sejepoko June 23, 2017