Similar to balls to the walls (or similar). Coming from the analog aviation controls I believe.

buildsjets 2 hours ago | parent | next [-]

Example, throttle controls on a Dogulas DC3. All engine controls forward is the typical convention for full power. (At sea level, neglecting the altitude effect on required engine fuel/air mixture.)

https://www.douglasdc3.com/dc3throt/dc3throt.htm

	▲	conartist6 an hour ago \| parent [-]
		That said, i'm sure the pilots were aware of the double entendre

▲

CalRobert 2 hours ago | parent | prev [-]

Balls to the van der Waals

	▲	taneq 10 minutes ago \| parent [-]
		Engaging in a little hydrogen bonding, eh?