Green’s Dictionary of Slang

throw it v.

[abbr. colloq. throw in the towel]

(Aus.) to stop doing something .

[UK] M. Amis letter 30 Nov. in Experience (2000) 57: If there are no developments that we think make it worth-while, have I your permission to throw it?

SE in slang uses

In phrases

throw it up to someone (v.) (also into someone’s teeth, up at someone, up in someone’s face)

(US) to criticize someone, to hold someone up as an object of reproach.

[Aus]H. Lawson ‘Two Sundowners’ in Roderick (1972) 100: You’ll always be throwin’ it up to me afterwards that I done you out of a job.
[UK]Boy’s Own Paper 27 July 675: It was the height of meanness, he declared, for a fellow to ask another fellow to have some oranges and then to throw them into his teeth half an hour after he had eaten them.
[US]‘J.M. Hall’ Anecdota Americana I 22: Now listen Cohen, I don’t throw it up to you that he laid my Becky over on the couch. I don’t throw it up to you that he screwed my Becky there.
[US]J. Conroy World to Win 222: It was hell having to sponge off people whom you used to ride and razz and who now took great delight in throwing it up to you.
[UK]J. Curtis You’re in the Racket, Too 39: ‘You always help me to spend it.’ ‘Throwing it up in me face now.’.
[US]B. Rodgers Queens’ Vernacular 196: throw it up [in one’s face] to never let somebody live something down.
[US]C. Loken Come Monday Morning 41: Throwin’ it up to me ’cause my wife had to get out’n work.
[UK]P. Barker Blow Your House Down 51: I’m afraid he’ll throw it up at me.