SNR, is commonly used in the snap chat community it means Streaks and Recents.
Mike: SNR
Doug: yah lets keep our streak
Stoke to Nut Ratio. How many strokes it takes one to ejaculate.
Don Juan: Hey I just beat my SNR record; I just hit 36! (Dirty Six)
Nigga: Cool Story Bro, don't tell it again!
Show No Respect. Commonly Used Down Here In The White Ghetto In Too Stoned Az
Bitch We SNR
"Streaks and recents" when a person on snapchat sends a picture to all of their streaks and recent snapchat friends (possibly trying to start new streaks)
Girl: *sends picture of random lamp* "goodnight / snr"
commonly used in snapchat, it is referring to your 'Streaks n' Recents'.
*sends a snap to someone they have a 47 day streak with* SNR