Green’s Dictionary of Slang

funny adj.1

[SE feeling funny]

1. tipsy, slightly drunk.

[UK]W. Toldervy Hist. of the Two Orphans I 62: More brandy was drank, and, Tom Throw beginning to be what is called funny, the house was full of uproar and confusion.
[UK]Egan Life in London (1869) 267: The trio were getting rather funny.
[UK]Egan Bk of Sports 81: It is true that Tom Moody now and then went to bed with rather a ‘funny nob’.
[US]Wkly Rake (NY) 9 July n.p.: [P]eople cannot drink wine without feeling funny.
[US]Nat. Police Gaz. (NY) 18 Mar. 10/4: [He] returned to his home with just enough jig water and bug juice In him to make him funny.

2. (US campus) intoxicated by marijuana.

[US]Eble Campus Sl. Apr. 4: get funny – become high from smoking marijuana.

3. in terms below, insane, crazy.

In compounds

funny farm (n.)

a psychiatric institution.

J. Knowles Separate Peace 101: You might start to believe it and then I’d have to make a reservation for you at the Funny Farm.
[US]K. Brasselle Cannibals 180: Between Gina and Terry, I just might get good-mooded onto a funny farm.
[Can]R. Caron Go-Boy! 79: You oughta be on the funny farm, you jerk!
[UK]J. Sullivan ‘Healthy Competition’ Only Fools and Horses [TV script] Think he must have come from the funny farm he was really silly.
[US]S. Morgan Homeboy 296: The same word used to put kooks on the funny farm.
[Aus]P. Temple Bad Debts (2012) [ebook] She was sixteen, lovely girl. Never the same again [...] In and out of the funny farms. Cut her wrists, swallowed anything she could find.
[UK]B. Hare Urban Grimshaw 78: The whole place was some kind of funny farm for disturbed [...] smegma-sandwich-eating doilems.
[Aus]C. Hammer Scrublands [ebook] ‘Drove me mad, put me in the funny farm. Drugs. Electric shock therapy. Suicide attempts’.
[US]J. Ellroy Widespread Panic 288: ‘Caryl bit her nipples off and she’s been in the funny farm ever since’.
[UK]J. Meades Empty Wigs (t/s) 820: [I]t stopped being funny peculiar... it went one hundred and fifty per cent funny farm.
funny house (n.) (also funny bin, ...factory, ...place)

(US) a psychiatric institution; also attrib.

[US]Omaha Dly Bee (NE) 7 Nov. 4/4: Have to change your brand of dope, Tim [...] or you’ll be a candidate for the funny house.
[US]S.F. Call 10 Mar. 9/1: I didn’t know the Washington asylums were so fine that they brought funny-house candidates all they way from New York to out them there.
[US]C. M’Govern ‘Soldier Sl.’ in Sarjint Larry an’ Frinds n.p.: funny-house:—Insane asylum.
Wkly Ariz. Jrnl-Miner (Prescott, AZ) 3 June 1/3: Baseball Evangelist Grills the Preachers. Declares Majority are [...] Candidates for the Funny House.
[US]G. Bronson-Howard God’s Man 376: You better can that black smoke, young fellow, or it’ll have you in the funny-house.
[US]R. Chandler Farewell, My Lovely (1949) 158: Who put me in your private funny house?
[US](con. 1948) G. Mandel Flee the Angry Strangers 37: Don’t start calling people crazy or you’ll have to put all the citizens in the funny bin.
[UK]G. Lambert Inside Daisy Clover (1966) 113: I really would like to get her out of that funny house.
[UK]J. Colebrook Cross of Lassitude 97: You better occupy your mind, honey [...] or you’ll be ready for the Funny Factory.
[US]J. Wambaugh Choirboys (1976) 267: Are you trying to incinerate that Roscoe belongs in the funny place?
C. Leach Thoughts I 30: The Funny House There’s a place I go when I’m down / Where the people come from all parts / It’s the nut house down town.