Delaying tactic

DS said this morning "Go shopping?" (I'm training him to enjoy shopping for his future partner's sake ;) ) and I explained "no, Mummy has to go to work today so you're going to childcare" and he was not pleased with this answer. We brushed teeth etc and I went to grab our bags and he says "do poos"

I put him on the loo and he demands a book, to which I say no, just do what you have to. Nothing. Go to put his nappy back on, he says "do poos", back onto the loo again, nothing. Repeat, then I just re-nappy him and carry him out of the house. He didn't need to go 'cause he poo'ed at about 4pm.

I don't want to doubt him, so I kept putting him on. He hasn't been telling me if he needs to pee and very occasionally only if he needs to poo.

Do you reckon I should just give him the one benefit of the doubt before going so as to not encourage his delaying tactic?

ETA: DS just reminded me of the other thing he was doing this morning - earlier in the morning I left him on the loo while I grabed my brush from around the corner & when I came back (4 seconds later) he had his foot IN the loo and then put the other foot in. I grabbed him and chucked him in the bath (fun for DS). Just now I could hear him calling me and I go into the ensuite, and there he is with a foot in the loo again. How do I stop this?

We have incorporated a toilet trip into DD1's routine when she is known to use it to stall, like bed time, and we are coming to the end of the stalling by using the loo as a way to get out of doing something.

Thanks Ali - so it will end, good to know.

we've just gone through this too!! night time stalling, removing nappy after going to bed and needing to do wee's, wanted potty, then toilet, then potty just kept going, its very much a control thing on their behalf, i started getting tough, one go on the potty and nappy back on, she learnt that i was the boss soon enough, seriously its about been tough with them