That swirl made an ad agency millions of dollars, and everyone remembers it.
NutraSweet is a trademarked name for aspartame. Aspartame occurs naturally in the body, but in large quantities it has seriously weird neural effects. On your tongue, it tastes sweet; in your hippocampus, it destroys memories.
Good thing the blood-brain barrier prevents most harmful things you swallow from getting to the brain. Unfortunately, aspartame goes right through it....