The episode where (I think) the children inherit some money and Homer takes them to a department store where Homer shows Maggie a soldier fort. Marge says it's too dangerous for Maggie; Homer poo-poohs her and then gets his finger pricked on the fort, receives an electric shock from it, and this causes a missile to fire from the fort's gun turret which goes into Homer's mouth and explodes - sheer genius!! I reckon it's somewhere around season 5 or 6.
Also, what's the title of the famous "999 springs to flush down" episode? (Oh no! that's done it... wait for 998 follow-up messages ;) ).
Last one: the name of the episode where the French fire a nuke at Springfield which rises up from the Eiffel Tower with "Intel Inside" written on it.
Many Thanks, Nigel Aagh! Every time I learn something new... it pushes something old out of my brain!