reaganing means: A tactful way of avoiding lying under oath. This term comes from Ronald Reagan’s testimony and comments during the Iran-Contra hearings. He would simply respond to difficult questions regarding his participation in funding illegally the Contras rather than plead the 5th. Reagan, who was a typical witness and refuses to answer questions during testimony, just seemed like a dumbass. Is it a scam? Or had his alzheimers started to effect him. (in Community Dictionary, added by Tobías Álvarez)