lose the plot
To cease to behave in a consistent or rational manner.
I lost the plot for a while then. And I lost the subplot, the script, the soundtrack, the intermission, my popcorn, the credits and the exit sign.
lose
UK /luːz/ US /luːz/
verb 5noun 1name 1
Definitions
verb
1
To cease to have (something) in one's possession or capability.
If you lose that ten-pound note, you'll be sorry.
He lost his hearing in the explosion.
2
To cease to have (something) in one's possession or capability.
Johnny lost a tooth, but kept it for the tooth fairy.
He lost his spleen in a car wreck.
3
To cease to have (something) in one's possession or capability.
I’ve lost five pounds this week.
4
To cease to have (something) in one's possession or capability.
She lost all her sons in the war.
I hold it true, whate’er befall; I feel it, when I sorrow most; ’Tis better to have loved and lost Than never to have loved at all.
5
To cease to have (something) in one's possession or capability.
Frank had lost $500 staying in Vegas.
noun
1
Alternative form of loos (“praise; fame; reputation”).
name
1
A surname from German.
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