Kinda self-explanatory, its using a shit ton of smilies in every single one of your conversations online/texting.
=) =P 8D =0 =( =\ ^.^ ^.- <----this person has OSD - Obsessive Smiley Disorder
by The Real Dr. Robert March 27, 2010
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A rare genetic disorder Where a person smiles excessively and can,t stop smiling under their own will event under depressing simulations
over actively smiling disorder (osd)- symptoms include Person smiles a lot, laughs a lot, is always happy
by Muslim1 December 18, 2009
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A rare genetic disorder Where a person smiles excessively and can,t stop smiling under their own will event under depressing simulations
over actively smiling disorder (osd)- symptoms include Person smiles a lot, laughs a lot, is always happy
by Muslim1 December 18, 2009
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Online Stuttering Disorder, or OSD for short is a disorder found in most users who use Discord. People with this disorder tend to stutter in their sentences, for e.g "I-" "wh-" "-" "you-".

Most people with OSD are in a Discord server called Regulate
You have OSD (Online Stuttering Disorder) stupid ass nigga
by NaslsLike May 25, 2021
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Osgood-Schlatter disease (OSD) is a common cause of knee pain in growing adolescents. It is an inflammation of the area just below the knee where the tendon from the kneecap (patellar tendon) attaches to the shinbone (tibia).

Osgood-Schlatter disease most often occurs during growth spurts, when bones, muscles, tendons, and other structures are changing rapidly. Because physical activity puts additional stress on bones and muscles, children who participate in athletics — especially running and jumping sports - are at an increased risk for this condition. However, less active adolescents may also experience this problem.

Painful symptoms are often brought on by running, jumping, and other sports-related activities. In some cases, both knees have symptoms, although one knee may be worse than the other.
Knee pain and tenderness at the tibial tubercle
Swelling at the tibial tubercle
Tight muscles in the front or back of the thigh
“Hey man, Did you hear David has OSD?”
No bro, but I think Ashley has it too!”
by MaddiOkay May 25, 2019
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Well known group of gamers and future software company.
OSDS released a new video on their YouTube channel!
by OSDS January 15, 2021
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the state of being completely and utterly addicted to the sport soccer. (futbol)
girl: alex obviously has osd
boy: what's osd?
girl: osd (obsessive soccer disorder). all he does is wear his soccer clothes matching with his other faggot soccer friends.
by anna oup- June 4, 2019
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