ssri stands for selective serotonin reuptake inhibitor. they are a class of antidepressants commonly taken to treat depression and anxiety. examples include prozac, zoloft, and lexapro.
many men who take these medications feel no side effects except for the universal one: ssris make men take an extremely long time to cum during sex. it usually takes about 30 minutes or more. though this can be nice for the girl, it is usually frustrating for the guy as they might not be able to cum at all during sex.
If combined with death grip, this can be fatal.
"Hey man, how did it go w Girl X last night?"
"She was hot but I got ssri dick so I couldn't finish."
"Fuck!"