Just got a notification about this.
$2 Medium Coffee is back at Hungry Jack's!
Cheapest drive through coffee you can get on the go.
Like last time, should also apply to tea and hot chocolate.
Personal recommendation: get a mocha or a hot chocolate. The rest can be a bit iffy.
"Get it while it's hot"
Not sure when expiry is, as notification didn't say.
Or can try and get a free one on the shake and win app.