He meant he was at least 5 years older than you. Not exactly 5 years older.
BINGO....my thoughts EXACTLY.
Sharief said "if you were five years older than me i would understand"
ND said "I am five years older than you"......exact numbers weren't given and the exchange wasn't even about what their exact ages were.
Shareef = Simpleton...and anybody who thinks he pwnd ND needs to have their brain serviced