is it possible that the bath nights are 'later' nights, or more rushed? usually a bath is a wind down for kids, especially a nice warm bath with a few easy toys - but if the nights you do baths are rushed, or later, you may be getting a bit OT out of it. could you try doing bath a bit earlier to see if that makes a difference? and maybe limit the toys in the tub? we try to keep bath time 'quiet' here and even though we bath them together, we really temper their desire to be silly in the bath and just encourage quieter play. not sure if that help you or not......