The particular flavour of shock, shame, guilt and revulsion experienced when you go to sit on a public toilet expecting the kiss of cold
plastic, and find it pre-warmed by a pair of unfamiliar buttocks.
Showberryness only ever applies when sharing a strangers second hand bum warmth in a cramped cubicle comes as a complete shock. Showberryness is always spiced with a degree of surprise.
The degree of showberryness experienced is directly proportional to the heat of the toilet seat, from an almost imperceptible reaction to a lukewarm / borderline
cold seat, to barely suppressed nausea caused by a recent
volcano arsed occupant.
Although showberryness is usually a fleeting sensation, a 'flashback' variant is not uncommon if you discover who you caught showberryness off soon after the event.
Disambiguation:
If you hang around in puplic toilets waiting for strangers to vacate cubicles so you can kiss
cheeks at
one remove, then you either live somewhere very
cold and have developed a commendable survival technique, or you'
re fucking perverted. Neither of these examples can be classed as true showbberryness.