This one was almost named "Fat Guy in a Little Coat" but I thought that name was too long. It is funnier though.
This is a recipe for a modified Tom Collins (a Limoncello Collins) that you can consume when you are fully prepared to do so. By which I mean, you have some Collins glasses. Don't try drinking this out of a coffee mug. That's a disgrace to all that is good and holy. If you can score some copper straws, you get extra points. Plastic straws are an abomination. They all end up in the ocean and fish really don't need straws.
This also turns a stodgy old drink into an ode to one of the all-time great comedic films. If you haven't seen Tommy Boy, there's a gaping hole in your cultural literacy that you need to plug ASAP with a visit to Netflix.
You'll laugh 'til you cry and learn many useful phrases. Probably the greatest of these is that any time someone physically hurts themselves, you'll know that the proper response is "That's gonna leave a mark."
Fill a Collins glass with ice, set aside in the freezer.
Combine gin, limoncello, lemon juice, and simple syrup in a cocktail shaker with ice. Shake until chilled
Strain into the chilled Collins glass, garnish with lemon wheel