Green’s Dictionary of Slang

knob v.1

[knob n.]

1. (also do the knob) to hit in the face or head.

[UK]Sporting Mag. II. 211: He knobbed his adversary well .
[Aus]T.A.G. Hungerford Riverslake 26: Look out, Jerry – he’ll do the knob any minute!

2. usu. of a man, to have sexual intercourse.

[UK]I. Welsh Trainspotting 312: Ye still knobbin Kelly?
[UK]K. Sampson Powder 369: The fucking manager was knobbing the big cheese from the record company.
[Ire]P. Howard Curious Incident of the Dog in the Nightdress 119: If you must know I knobbed Pikey’s bird!
[UK]I. Welsh Decent Ride 326: Easy for that cunt tae say, when eh’s knobbin ma fuckin burd!

In exclamations