autopilot
When standing in front of a urinal (or a regular toilet for the private types), you release your hand(s) from your johnson in the middle of peeing, leaving it free to guide the urine to its final destination without assistance.

Commonly activated whilst texting, or more rarely, when reading.
Once his pee-stream was safely pointed in the right direction, Ignacius disengaged his hand and entered autopilot mode.