Sen. Kamala Harris’s (D-CA) campaign responded to the remark Joe Biden (D) uttered to Harris during their pre-debate handshake with a single word: “Kid?”

When moderators introduced Harris on stage, she walked up to Biden and shook his hand. Thanks to a hot mic, the former vice president could be heard saying, “Go easy on me, kid.”:

As Breitbart News reported:

The humorous moment underscores weeks of tension between the two politicians. Harris surprised many at the first debate last month when she confronted Biden over his praise for two segregationist Democrats. Biden had invoked the men, Sens. James Eastland (D-MS) and Herman Talmadge (D-GA), repeatedly on the campaign trail while touting his ability to forge “consensus” in Congress.

Ian Sams, Harris’s national press secretary, responded with a single word: “Kid?”:

The lighthearted remark previewed a contentious debate filled with clashes on hot topics between the two – from busing to health care plans.