Kiswahili swear words beginning with the letter N

Phrase Meaning Is This Accurate?
Ntakufirwa I'll fuck you up the ass (100%)      (0%)
Ntakutomba I'll fuck you (100%)      (0%)

Kiswahili Swear Words by Letter:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z