Birthday Freebie
Smashburger: Free Birthday Milkshake
Smashburger
New York, NY
Your birthday month
Free
Smashburger loyalty members get a free milkshake during their birthday month, higher tiers potentially get even more
Smashburger: Free Birthday Milkshake takes place from January 1 through December 31 at Smashburger (Multiple NYC Locations). This is most worth it if the menu, tasting, or pop-up format is what you are going for. Hours are During store hours, valid birthday month.
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