Thirty-seven

• On the 9th of January, the number of shelves allowed in a Display Case was extended to be thirty-seven. Trying to add more than 37 shelves results in the message "Try not to add any more shelves to your display case on the way through the parking lot!"
• Obtaining thirty-seven of an item at once will result in the message "In a row?!"

References

• "Try not to add any more shelves to your display case on the way through the parking lot" is a reference from the movie Clerks.
• "In a row?" is a reference to the movie Clerks, where Dante tells Randal that his girlfriend "sucked thirty-seven dicks". The response was, "In a row?!"