Slow Reply/Replies. Usually seen on snapchat story's.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

Mean to screen record

SR stands for Skill Rating and is used to determine your competitive rank in Overwatch.

A game term for an item or skill. It might also im some Manga, lightnovels and anime. It means Super Rare.

SR - Nissan Motor Series usually referring to SR20DE/SR20DET

Seaman recruit, a NAVY term.