kunder
The back part of a mans scrotum. Tends to come in contact with the grundle when male is relaxed and in a seated position.
Sitting watching a movie makes my kunder really sweaty.
Kundere
Usually used in otaku fandom as a non-japanese person that uses -kun after every male character.
A: Ahh did tou hear the cute death sound of wolf-kun
B: You're suck a kundere
B: You're suck a kundere