We all know the words and we all remember rockin the backwards gear. Making this possible was 90's child rap-duo Kriss Kross with their popular party hit "Jump". And luckily for us, the once So So Def duo (Chris "Mac Daddy" Kelly and Chris "Daddy Mac" Smith) are set to reunite and perform for So So Def's 20th Anniversary concert down in Atlanta next month. The concert is to honor Jermaine Dupri's So So Def Records and reunite the label. Along with Kriss Kross, former So So Def artists Xscape and Da Brat will be reuniting as well. 

The concert is going down on February 23rd.