WEDNESDAY'S otherwise mundane Finance Bill press conference was livened up with the mere mention of interest bearing Government securities. There was a noticeable change in the temperature when Finance mandarin, Michael Tutty's dulcet tones awakened quite a number of yawning hacks with a mention of "strippers" and "stripping". But the slumber resumed when it became clear that all Tutty had in mind was a certain way of trading in Government bonds.