Also good for explaining what you did the night before or congratulating two people on their PDA.
Originations stem from the word mazeltov, the Jewish exclamation of excitement or congratulations.
Sometimes used to brush past a friend who is requesting a detailed description of "what did you guys do last night?"
Ben: "haha... Nuzzletoff!"
*Becky and Mark hug for a long time*
James (in passing) "Nuzzletoff!!"