Just a word of advice for all of the teams in Samoa's pool at the Rugby World Cup; make sure that your health insurance is up to date before you take to the field with them.
For the intensity and ferocity the Samoans showed in their shock 32-23 win over Australia last week should strike fear into every opponent.
And if I was Warren Gatland, I would be particularly worried because Wales' pool match against Samoa on 18 September now looks like it will be the decider for who finishes second behind South Africa.
Yes, Australia did not have their strongest team out and yes it was a friendly but Samoa did not see it that way.
Somoa and Gloucester's Eliota Fuimaono-Sapolu made it absolutely clear how he felt after the match.
He said: "To our Samoan youth, the world is yours! You can DO IT! You can reach your greatest dreams. I LOVE SAMOA. I LOVE u ALL WHO BELIEVED IN US".
The Samoans are full of confidence and you would be a fool to underestimate them. But that is what Wales did 20 years ago when they played Samoa in the 1991 World Cup.
Western Samoa, as they were called then, stunned the Welsh at Cardiff Arms Park winning 16-13. It is regarded as a national embarrassment and Samoa's victory over Australia has brought those memories back into sharp focus.
And the former New Zealand star Michael Jones reckons it will be Samoa who makes it through to the quarter-finals, meaning Wales will not have qualified for the last eight since 2003.
Jones said: "I think Samoa will finish second behind South Africa in their pool and qualify for the quarter-finals. I certainly believe they have the personnel to beat Wales.
"When they beat Australia last Sunday, they rocked the world. Now they have the belief that this time they're going to get through the pool stage to the top eight."
Jones started his international career with Samoa before going on to win the World Cup with New Zealand in 2007. He then coached Samoa in the 2007 World Cup.
And players such as Jones who switch allegiances is a sore subject in Samoa, which is only natural.
After the Australia victory Fuimaono-Sapolu also tweeted: "Maybe now our Samoan youth, would rather play for Samoa and not the shallow fleeting fame of the All Blacks and Oz."
And a place in the quarter-finals could help Samoa to become a greater force in world rugby. The odds have been stacked against them for so long with all of their best players leaving but they have what's needed to grow; confidence, belief and a nation's support
Jones added: "Rugby really is the country's life. They are gunning for the Welsh. I have great respect for Wales but they are seen as an obstacle which is surmountable."
Gatland and co take note or there could be major changes in the Wales camp after this World Cup.