A HBP Clue?

[lilysphoenix]

No: HPFGUIDX 104951

I was re reading OoP, when I came across this excerpt that I had so 
freely dismissed the first time around:

"How're we getting to King's Cross tomorrow, Dad?" asked Fred as they 
dug into a sumptuous pudding. "The Ministry's providing a couple of 
cars," said Mr. Weasley. Everyone looked up at him. "Why?" said Percy 
curiously. "It's because of you, Perce," said George seriously. "And 
there'll be little flags on the hoods, with HB on them-" "-for 
Humongous Bighead," said Fred. 

Could the HB be a clue?  Humongous Bighead Percy = HBP???  It just 
seems a little too coincidental for me, but what do I know?

Desperate to resolve,
Debra