My sundae is pretty conventional and low maintenance:
Four scoops of super-premium vanilla ice cream.
12 tablespoons hot fudge. H-O-T hot. Not warm.
8 tablespoons of halved almonds. Not crushed, not "slivered."
1 cup of freshly whipped cream. Nothing from a can.
No fruit. No sprig of mint. No serving it on sit-com "ho" abs (although if "feature film" ho abs are available, I'd consider it...)