There's nothing more popular on the internet these days than McDonald's hacks.
This TikTok user has gone viral for her simple McDonald's milkshake hack that gives you an espresso hit!
"This is a vanilla milkshake from McDonald's and an espresso shot - you whack it in, and then you mix it." the TikTok user says in the video.
"Then you start mixing together. When you have a normal McDonald's milkshake anyway it's well lumpy, but this makes it a bit more juicy."
"And then voila! A frappuccino thing."