Top Definition
The penis of a Time Lord. Most commonly used to refer to the interdimensional and time traveling peen of the Doctor or the Master. Some can argue that Capt. Jack has a tiemcock, but this is wrong, he has a tiemagentcock.
Jack Harkness wants the tiemcock something fierce.

It's long been rumoured that the Doctor wants some serious tiemcock from the Master.
by Raevyn Lovel October 27, 2007
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