The 28-year-old Frenchman grabbed a double at the weekend as Arsenal secured a 2-1 win away to Newcastle to consolidate third spot in the Premier League.
Giroud came under fire in the first leg of the Gunners' Champions League last tie against Monaco after missing several big opportunities.
But Giroud has rediscovered his best form, and used a colourful phrase to reflect his transformation which translates as 'I don't fart higher than my behind'.
Giroud however insists he still has room for improvement.
EPA
Olivier Giroud (centre) celebrates scoring against Newcastle
I am in my best period since I arrived at Arsenal. I need to continue like this
Olivier Giroud
"I am in my best period since I arrived at Arsenal," Giroud told Radio Monte Carlo.
"I need to continue like this, I don't want to stop here. I scored 16 or 17 goals last year.
"I would like to do better and to help my team reach its aims. That is what is most important."
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