"DON'T make him angry" is the cry of fans of any team opposing a gently giant with strength to match.
"Make him angry, please" could've been the cry of Parramatta and then Manly fans.
It would certainly be the cry of any Canterbury Bulldogs fans, now Tony Williams has followed his ex-Manly coach Des Hasler to Belmore.
The 192cm, 118kg giant they call T Rex must have been quite a sight when he was running around Liverpool High School and in the Parramatta junior competition. Not only the ground but players half his size would have been quaking.
He didn't need to get angry.
He just needed to be. And he could run like the wind.
And he just needed to be when he progressed to the under-20s with Parramatta on the wing, a position opposing teams, as opposed to wingers in other teams, would have been happy for him to stay in.
Size, strength and speed are wonderful attributes to build on but alone are not enough when you progress to the NRL.
When Williams made his NRL debut with Parramatta, it was apparent here was a player capable of anything.
But you can't terrorise without trying in the NRL.
Williams wasn't using his size to his best advantage. Eels fans were silently saying "get some mongrel".
Manly coach Hasler certainly saw a player capable of anything when he enticed Williams across the harbour, and the giant scored a bag of tries in his first season on the wing, but a move to the forwards was inevitable.
There was an inevitability about his impact too, when the giant soon to be called T Rex made the move in 2011, the Sea Eagles' premiership year.
Williams was a part of that premiership team.
The former Tongan international had declared his allegiance to Australia over New Zealand, and if Hasler hadn't brought out anger, he'd brought out controlled aggression.
Williams moved further forwards last season, and is now potentially a permanent member of Australian Test and NSW State-of-Origin teams.