That familiar crocodile grin comes out when Hermann Hreidarsson recalls those 32 minutes.
It arrives with the thought of the one-man Southampton demolition act he regards as one of his finest moments in four-and-a-half seasons at Pompey.
Quincy Owusu-Abeyie played just 11 matches for the Blues, only three of which were starts.
Yet he will forever be remembered in Fratton folklore for the south coast derby cameo on what proved his sole FA Cup appearance for the club.
Hreidarsson was partnering Marc Wilson in the centre of Pompey’s defence for the FA Cup fifth-round clash at the home of their fierce rivals on February 13, 2010 – the last time the Blues played at St Mary’s.
From that position, he witnessed what he ranks as one of the greatest individual performances during his eventful Fratton stay.
It was the 58th minute when the frustratingly-inconsistent Quincy entered the field as a substitute for Angelos Basinas.
Come the final whistle, the Ghana international had scored one goal and conjured up two others during a breath-taking contribution.
Avram Grant’s men had triumphed 4-1 and proceeded to reach the FA Cup final for the second time in three years.
As for Quincy, he left Fratton Park six weeks after that scintillating St Mary’s display.
Recalled early from his loan spell by Spartak Moscow, he was subsequently sold to Qatar side Al-Sadd.
And for Hreidarsson, it was a short but so very brief two-month stay from the nomadic former Arsenal man.
He said: ‘In all my years at Pompey that was my first and only derby game.
‘It was a fantastic occasion and very, very special.
‘There was a great excitement in the build-up against a team who were in League One, but it didn’t matter what division they were in. This was a derby game.
‘The atmosphere was unbelievable and, perhaps, it was fitting a special performance from one of our players would win it.
‘Quincy was quality that day – it came down to him to win us the game.
‘He appeared as a substitute, showed his pace and absolutely tore them apart. Wasn’t that great!
‘From what I remember, he didn’t play that many times for us. One day he was just gone – that was the end of him.
‘But Quincy definitely had that ability in his locker. With players like that, you want them to produce it week in, week out – they never do, though, and that’s football.
‘That match against Southampton, though, was one of those days when it came off.
‘His performance had to be right up there from players I was with at Pompey. It was fantastic – Southampton really didn’t know what to do with him.
‘I remember it so clearly. It was a great day for the fans and us players. You don’t forget days like that.’
It was Quincy who opened the scoring, eight minutes after coming on as a substitute.
The on-loan midfielder took two touches just inside the box before curling a right-foot shot into the bottom corner.
Within four minutes, Rickie Lambert had levelled for the hosts with a header.
But Aruna Dindane restored the visitors’ lead in the 75th following a threaded pass from Quincy.
Then, Nadir Belhadj capped a magnificent solo run with goal number three in the 82rd minute.
It was left to Quincy to steer Belhadj’s left-wing cross into the path of Jamie O’Hara who slammed in a fourth to complete the emphatic scoreline.
He may be at Coventry these days, even if he has been ruled out for the season through injury, but Fratton favourite Hreidarsson is hoping for a similar winning outcome from the latest south coast derby.
He added: ‘I’ve played in the derby between Ipswich and Norwich and also Charlton against Palace.
‘But they were nothing like the south coast match. I think that is the biggest one by far. Definitely.
‘Southampton actually started so much better in that 4-1 win and David James kept us in the game for the first 10-15 minutes and made some great saves. Then, as the game went on, we grew stronger, stronger and stronger.
‘We showed the difference, really.
‘We were the much better side and in the end that showed in our performance.
‘It was a great day and I hope Pompey can also win it tomorrow.
‘They really need it and I will be keeping an eye out for the result.
‘After a season like this, a really good result is the least the fans deserve.’