"I was just in the bathroom and was like, 'Hell it's 3 a.m. and we're on an airplane, and have been flying for ages," the British radio and TV host told Yahoo! "Plus, I have a massive crush on Sydney, one of the air hostesses."
Rihanna has not responded to the incident that has sparked a flurry of news reports. Dormer said he was careful not to invade Rihanna's area of the plane.
"I thought about doing it the long way and going all the way down to the first class section, but thought her security is going to take me out, and it's going to get ugly," he said.
Though Dormer's obscene gesture drew mostly cheers from the media and contest winners in attendance, it was preceded by a peaceful protest. Journalists upset that Rihanna had not held any of the press conferences promised by her label, chanted, "Just one quote," "Occupy 777" and "I Need A Headline."
Journalists are especially upset because of the tour's demanding schedule. In addition to the daily flights to the different countries, the 777 Tour travelers also spend an extra three to five hours sitting on the runway before departure, in the airport baggage claim area and customs.
READ MORE: Yahoo!