mandendum
When a man, outwitted by a woman, tries to revise his previous, ridiculous statement in an attempt to match her wits.
I witnessed my brother come home to his wife and read her "stupid women jokes" off of his iPhone. When she retorted wittingly to each one, reversing its intended gender "dis", he frustratingly extorted: "I'd like to submit a mandendum", to which we both replied: "Too late".