blob, n. — Green’s Dictionary of Slang

blob n.

1. in cricket, a score of 0.

1889		Cricket 18 Apr. 60/2: St. Leonard's were all out for 25... Seven ‘blobs’ was the total.
1914		Sport (Adelaide) 7 Feb. 7/2: What's the use of Pal C. in the Moonta shoppies’ cricket team? Anyone can get a blob; Bill F. is worth two of him .
1966		J. Holledge Great Aust. Gamble 51: ‘The next innings you got a blob’.

2. (Aus./US) an insignificant person, thus a fool.

1915		Eve. Sun (Baltimore, MD) 9 Feb. 4/5: These spineless blobs, misnamed men.
1920		Ade Hand-made Fables 305: No matter how much of a Blob a man may be in his own Bailiwick, he becomes a Mastodon as soon as he is 80 miles from home and wearing a Badge.
1924		C.J. Dennis ‘The Knight’s Return’ in Chisholm (1951) 85: Yer in all wrong! Yer in all wrong! Yeh blob!
1936		(con. 1830s–60s) ‘Miles Franklin’ All That Swagger 394: Adrienne was no blob or a woop-woop.
1945		Baker Aus. Lang. 130: Fools of one kind and another [...] Billy Muggins, blob, boof head, bunny [etc].
1947		C. Mann ‘Old Rosy’ in Light in the Valley 191: The poor blob fainted.
1967		L. Bruce Essential Lenny Bruce 169: I was just a blob, a vegetating part of a vegetating mass.
1996		H. Roth From Bondage 386: You had been self-supporting for I don’t know how many years. Whereas I – Christ, what a blob!

3. (US campus) an ugly or offensive person.

1967–8

Baker et al. CUSS.

4. a fat person.

1959		D. Niland Gold in the Streets (1966) 201: Has the fat blob put me in here?
1960		E. De Roo Big Rumble 83: The chunky blob stood there at a loss.
1998		I. Welsh Filth 76: Fast metabolism, not like some of the blobs in this place.
2003		N. Griffiths Stump 75: What fat slob of a cunt invented the fuckin doughnut? I mean, what was the blob thinkin?

5. a condom.

1997		Roger’s Profanisaurus in Viz 87 Dec. n.p.: blob n. Condom; rubber; rubber Johnny (qv).
2001		OnLine Dict. of Playground Sl. 🌐 blob n. condom.

6. menstruation; often as the blob.

2000		P. Howard Miseducation of Ross O’Carroll-Kelly (2004) 218: She goes to Our Lady of Perpetual Blob Strop in Templeogue.
2004		P. Howard PS, I Scored the Bridesmaids 10: Thought it [i.e. a talk] was about the blob, didn’t you?

In compounds

blob queen (n.)

(Polari) the hanger-on of a drag queen n. (1)

2019

P. Baker Fabulosa 289/2: blob queen a queen of no account who tends to follow a drag queen around, hoping that some of the glitter will fall off on her.

In phrases

just the blob

(Aus.) satisfactory, as required.

1907

Brisbane Courier 29 May 6/3: ‘Just the glassy marble’ [...] ‘Just the glassy alley,’ ‘Just the juicy chop,’ ‘Just the blob,’ ‘Just the shiny shilling,’ ‘Just the plonk’ are only a few of its offshoots.

on the blob

menstruating.

1993		D. Buckingham Reading Audiences 191: ‘It’s like she’s on the blob [menstruating], isn’t it?’ says Colin with matter-of-fact sexism .
1997–2002		Alt. Eng. Dict. 🌐 on the blob it’s that time of the month. Used commonly when encountering foul mooded women...e.g. ‘oh no, she’s on the blob!’.
2001		OnLine Dict. of Playground Sl. 🌐 (on the... ) blob n. menstruating, experiencing one’s period.
2005		R. Blonde T-shirt Theory [ebook] She’s on the blob.’ ‘Ah say no more my friend.’ [...] ‘No it’s not that I mind when she’s got the painters in it’s just she never puts out’.