Chinese slang meaning "You are right" (你说得对)
A: Trump is the greatest president ever!
B: Yeah, NSDD.
by Ryancheng April 4, 2020
Get the NSDD mug.
nut sack deep double stuff (NSDDS). it is when achieving nut sack deep penetration one also inserts his scrotum into the vagina. This is the ultimate level of penetration by a male.
Tanner: Dude i was powning this chicks vag last night and she was down with letting me go NSDDS.

Brian: WTF is NSDDS?

Tanner: it is when i go nut sack deep on a chick and then lshe ets me shove my ball sack in her vag as well. really a delightful yet painful experience for the both of us.
by Tanner W. November 3, 2010
Get the NSDDS mug.