The Irish Times has described Green Tea as "essentially an extended version of Nob Nation", Callan's previous incarnation.[3]
In October 2011, Callan was involved in a public altercation with Kerry GAA star and fashion columnist Paul Galvin, with media reporting that Callan had recently mimicked Galvin asking TaoiseachEnda Kenny to man-up by giving him a body-wax on Green Tea, and that Callan has also been making humorous references to his relationship with Gráinne Seoige.[4][5] The altercation prompted an appearance by Callan on national television during which he came out as gay.[6] Callan impersonated Galvin again on Green Tea the week after the incident.[7]
^Mullally, Una (9 January 2012). "Radio mimic aims to make impression on stage". The Irish Times. Irish Times Trust. Archived from the original on 9 January 2012. Retrieved 9 January 2012. Green Tea has been a big hit for RTÉ Radio 1, with Callan effortlessly transitioning from Gerry Adams to Giovanni Trapattoni, Charlie Bird to President Michael D Higgins.
^Heaney, Mick (12 February 2011). "'Green Tea' makes for a weak brew". The Irish Times. Irish Times Trust. Archived from the original on 17 February 2011. Retrieved 12 February 2011.