When Steve pops into Susan's flat, he accidentally sees Sally's naked bottom. This incident leads to dilemmas and awkwardness all round, which are dealt with in the classic sequence outlined by Jeff: the prickles (an embarrassed silence), the blurts (talking too fast), followed by the 'head laugh'.
On average, men and women think about sex every six seconds. Shorten that to every second, and you've got Coupling.
This series centers around Susan and Steve (who are a couple), and Sally and Patrick join the gang as friends of Susan (and then Steve), while Steve pulls in his best friend Jeff and his crazy ex Jane.
Coupling - Her Best Friend's Bottom Synopsis and Schedule