who was actress on his lap at 19mins 45 secs into film

hi,

can anyone tell me who the actress was, who was on his lap saying 'if u want me to pee all over your face i'll gladly save up aload' & ron says skip it'.
at 19mins 45 secs in on my version.

blonde attractive, i would like to know her name & what films she has been in with ron.