The 'Notorious' Conor McGregor manhandled Dennis Siver on Sunday night, delivering a second round TKO of the German during Fight Night 59 in Boston.

There was no love lost between the two fighters all evening. Days prior, McGregor had ripped Siver in the media for his steroid use. McGregor also refused to shake Siver's hand before the fight, opting to flip him the middle finger instead.

Conor McGregor Accuses Siver of Steroid Use

Siver kept things close in the first round, but was stunned by a fantastic punch combination by McGregor in the second. He went down and did not get back up.

Earlier in the week, UFC president Dana White had said McGregor would receive a shot at the featherweight title should he defeat Siver. McGregor was no doubt cognizant of that fact, because after dispatching Siver he actually hopped the Octagon cage and got in the face of champ Jose Aldo, who was watching the bout from the front row.

Watch a clip of McGregor's actions below:

McGregor will get his chance to challenge Aldo for the UFC featherweight title belt on May 23, as part of UFC 187.

“I’m going to hand him my spit bucket, tell him to spit-shine that belt, and bring it back here for me to take it,” McGregor told the crowd, according to MMA Junkie.