can tic tacks kill you?

Then you'll get a minor sugar-rush...but no, it won't "kill you"...anymore than the old Pop Rocks candy could back in the '80s...

A major disadvantage of swallowing multiple tic tacs at once, is they massively increase the chance of role play.

A major disadvantage of swallowing multiple tic tacs at once, is they massively increase the chance of role play.
Agreed.
I'll assume that's tic-tacs mixed with thumb tacks. Not safe. The tacks could be rusty or cause ruptures in your digestive track or the easy there and or out.