The heavyweight shoved Hammer in the chest and ended up by promising to put him to sleep at the weigh-in at the O2 in London.
Fury (23-0 KO17), who is the mandatory challenger to WBO champion Wladimir Klitschko, was in a typically misechievous mood, playing with the challenger’s cap and then baring down on him – even if is already six inches taller.
He was the first on the scales and came in at 18st 8lbs, with Hammer (17-3 KO10) lighter at 17st 10lbs.
The Risky Business card will also include Chris Eubank Jnr, making his comeback following his loss to Billy Joe Saunders in November.
The middleweight takes on Dmitry Chudinov (14-0-2 KO9) with the interim WBA world middleweight title on the line.
Eubank Jnr (18-1 KO13) was weighed in at 11st 5lbs 7oz with his opponent slightly heavier at 11st 5lbs 9oz.