look up any word, like thot:
 
1.
Lets doit means Im down for whatever it is you talking about.
I wanna go to the mall.

re: lets do it!
by Me02ly16 October 07, 2009
 
2.
the last words of convicted serial killer Gary Gilmore minutes before his execution in Utah. Now it is used as a phrase of excitement, ecstatics, or overzealousness. it's badass
Gary Gilmore-"Lets do it"
Firing squad-(bang bang)
(Gilmore dies)
by Preacher of bad words May 19, 2011