This makes very little sense, and none at all if you haven't seen "Blink".
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It's Technical
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"Wibbley Wobbly Timey Wimey?" Martha giggled as she stepped from behind the camera. "What's that then? You making up words for things you don't understand?"
"I understand perfectly," the Doctor groused. "They're technical terms. Very technical."
Martha was unconvinced. "How technical?"
"Very very technical. You have no idea how technical. See, you don't get Timey Wimey until, oh, about 20th year in Time Lord school. And Wibbley Wobbly? That's a graduate course. Even I -- brilliant me, the Doctor -- failed Wibbley Wobbly the first time."
"Reeeeeally?" Martha asked, smiling. "You failed Wibbley Wobbly?"
"Well, there's a lot of maths."