The meaning of the Acronym NIB is...

NIB is

• Noses In my Butt
• Not In The Butt

More Meanings For NIB:

• Next Interface Builder
• Nextstep Interface Builder
• Neodymium Iron Boron
• Noses In my Butt
• Not In The Butt
• Necrophilics In Black
• New In Box
• Naughty Ignorant B
• Ndlc Ific Bank
• Nothing In Brain
• Nelta Irene Brock
• Naughty Indian Boy
• Not In Box
• Newly Inducted Brother
• Noninterference Basis

NIB is also in:

• Adults
• Chemistry
• Funnies
• Hobbies
• Military
• NASA
• Software
• Unfiled