Facing the Pumas at Twickenham on Saturday holds no fear for Chris Robshaw after the England flanker met some of Argentina's most hardened criminals in June.
Robshaw was among a small group of players who visited a maximum security prison outside Buenos Aires during the two-Test tour.
The trip was to assist a successful programme called Fundacion Espartanos that has used rugby to reduce re-offending rates from 60 to five percent.
The England contingent, which also included Dylan Hartley and Danny Care, took 40-50 inmates through a training session on a 3G pitch and were surprised by the reception they received.
"It was a pretty daunting experience going in and we weren't sure what to expect," Robshaw said.
"As you go through the barriers, the first one, the second and then the third and you see the dogs on the leash walking about and guards with machine guns, you're thinking, 'I don't know if we should be in here'.
"It was an experience in itself to go to a maximum security prison but to do some good as well. The guys were getting kisses off the guys at the end. Handshakes and hugs.
"They were so warm and welcoming to us. Afterwards they gave us T-shirts. There was nothing malicious or aggressive.
"We all assumed that we would be stood on the side, just watching. But we were in there, playing touch, doing drills. We couldn't understand each other but their appreciation for us coming in was massive.
"They told us not to ask what the prisoners were in for. It was a maximum security prison, so I imagine they weren't in for great things."