How do you get 137 laff on toontown

Simple, you start by completing all your toontasks. That should get you on a boost for a 100 laff. while in that proccess you can fish, fishing earns you trophies that give you laff boosts. You can also garden for gardening trophies that also give you laff boosts. Then there is also racing at the goofy speedway which earns you trophies that also give laff boosts.

Gardening- 4 laffs
Golfing- 3 laffs
Racing- 3 laffs
Fishing- 7 laffs
Maxing:
Sellbot, Cashbot, Lawbot, and Bossbot- 5 laffs each

= 37 extra laff