So to overcome this I have worked out a completely fail-safe method of eating, which involves firstly pulling my top lip back and gnawing off the edges of my food like a gerbil.
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The second part of the eating process is tipping my head back to make the food drop down without touching the tache.
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I've found this to be an effective method for keeping my tache ice-cream-free.
Shame it makes me look like a twat...