it's not something that I encourage, and indeed I have actively ensured that DS2 (13 months) has had no chance to do so. Until tonight when I was telling DS1 off , he quietly tottered into the bathroom, where I found him with his right arm in the bowl and and hand in the water at the bottom. I'm fairly sure that he's had a 'taste' too, DS1 had a wee in toilet prior to the incident (observed by DS2 - hence the interest??) just to add the general "eeuk" factor.
Do I just wait it out for the tummy upset? Is it a doctor job if so? Please reassure me Mumsnetters!