Green’s Dictionary of Slang

struesbob! excl.

also true’s Bob!
[lit. it’s true as Bob, i.e. God, note Bob n.2 ]

(S.Afr.) a general excl. of assertion.

[SA]C. Hope Ducktails in Gray Theatre Two (1981) 40: True’s bob Howellsie. Sometimes I think those weights you gooi give you muscles in your head. (He and Jimmie laugh).
[SA]P. Slabolepszy ‘Under the Oaks’ in Mooi Street (1994) 29: Stuff this. I’m going to Australia. Stru’s Bob!
[SA]CyberBraai Lex. at www.matriots.com 🌐 STRUESBOB: Descended to us from the oath ‘As True as God’ and is often used when the speaker anticipates disbelief: ‘I took her to lunch and she ate five packets of slap chips and wanted more. Struesbob.’.
[SA] ‘SA English’ on Joburg.org.za 🌐 Struesbob (pronounced s-true-zz-bob) – ‘As true as God’, meaning it’s the gospel truth. An example is: ‘I decided to bet just R10 at the horse races and struesbob I won R2000.’.