I'll think about it

Synonym for "hell nah". Typically used by people who lack integrity. If it were me, I'd rather if the person was honest and just said no rather than leaving me under false hope.
Tim: Would you like to go out for a lunch date?
Emma: I'll think about it
by UltimateDoge May 27, 2022
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I'll do it in September.

A phrase used to put off something you do not intend to do.
Angry mobs: We demand you step down!

Mubarak: I'll do it in September.
by 1700somewhere February 04, 2011
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I'll pencil you in

To sexually assult/stimulate someone with a pencil, usually rubber end first for safety.
Oi, come here you silly slag... I'll pencil you in!
by Horny B April 27, 2008
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I'll marshmallow your mum

To anyone here not because of Dan (aka Daniel Howell/ Danisnotonfire in the older days) and Phils (Amazingphil) recent Halloween video, then I apologise sincerely but you will have to look harder. For those of you who are then well done you are dedicated.
'I'll marshmallow your mum!' said Phil pushing dan to the side.
by Gg1246 October 31, 2017
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I'll be ready in 5 minutes

The validation of Einstein's theory of relativity, in which the concept of five minutes is infinitely elastic, and feminine.
"I'll be ready in 5 minutes" she liked to say, and he knew he could relax for at least an hour.
by Monkey's Dad April 22, 2023
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I'll See Myself Out

Something you say before leaving a room after making a really bad pun or joke that has everyone blankly staring at you.
"I was taught to never iron clovers. You don't want to press your luck."
.....
"I'll see myself out."
by Ubeenbamboozledson August 13, 2022
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