Green’s Dictionary of Slang

1. (orig. Aus./Can., also suckholer) a toady, a flatterer [suck up v. (1) + hole n.¹ (1a)].

1900–10		Stephens & O’Brien Materials for a Dict. of Aus. Sl. [unpub. ms.] 146: SUCK, OR SUCKHOLE OR SUCK-ARSE: a low-down cringing sycophant.
1921		N&Q 12 Ser. IX 417: That most despised of all characters, the ‘s--k-h---e,’ who would stoop to anything to curry favours with his superiors.
1939		in A. Banks First-Person America (1980) 55: He never joined the union. He’s just a suckhole for the company.
1942		(con. 1890s) S. O’Casey Pictures in the Hallway 266: O’Phelan called Mailmurra a suckhole.
1954		T.A.G. Hungerford Sowers of the Wind 8: ‘Suck’ole,’ Lane commented flatly.
1978		S. King Stand 467: Love to give orders, don’t you, suckhole?
1986		T. Winton That Eye, The Sky 119: Tegwyn said if you ask questions kids’ll think you’re a suckhole.
1993		M.B. ‘Chopper’ Read How to Shoot Friends 35: If I wanted to blow my nose on his shirt he would have paid for the privilege. The guy was a suckhole.
2003		McGill Reed Dict. of N.Z. Sl. 203: suck-holer A toady. ANZ.
2003		N. Griffiths Stump 182: Get the suckholes like Jez Sully an his creepin fuckin mates to do the dirty work for im.
2005		P. Temple Broken Shore (2007) [ebook] Tip them off yourself? [...] Or have you got some suckhole does it for you?

2. (US gay) a hole made between two toilet stall partitions in a men’s room, used for sex [suck v.¹ (1) + SE hole].

1972

B. Rodgers Queens’ Vernacular 97: A hole drilled or carved between the partitions of two toilet stalls in a men’s room and used for sex [...] suck hole.

3. an unpleasant place.

2006

C. Hiaasen Nature Girl 208: This is a goddam suckhole and we’re gettin’ out now.

4. (US) general term of abuse.

2008

Simon & Zorzi ‘Unconfirmed Reports’ Wire ser. 5 ep. 2 [TV script] I’ll drive away right now. If that’s OK with you two suckholes.