Or, sometimes Matt calls him LT

Other names you can call Lars, besides Lars:

Larsy,

  Larsy-bones,

 Larsy-Parsy Pudding and Pie,

 Bubba,

 Bubsie,

 Buddy,

 Sweet Cuppin' Cakes,

or Hewwo-Baby. (his own catch-phrase)

Pretty sure Lars would win Most Popular in our house if we had an official contest.