Merriam Webster's definition of "NAG":
Intransitive Verb
1)  To find fault incessantly
2)  To be a persistent source of annoyance or irritation
Transitive Verb
1)  To irritate by constant urging or scolding
2)  To worry, badger
The Halos' Rock 'N' Roll Version:
The Wolfie Solution:
 


