Hee, Anna, that's funny - I think I may have said "sintigo" at one time or another...
OK. Toty was painting my apartment and he told me "Ve a la ferreter?a, y compra dos pintura de lata". Now, I didn't know that a "lata" was a tin, so I thought "pintura delata" was, like, pintura acrilica, or some such thing, and for some reason, I thought this was a very important detail.
So I go down to the hardware store, choose my 2 cans of paint and I'm thinking to myself, I better make sure these are "delata".
Me, holding 2 tins of paint: Excusame, por favor, esta pintura es de lata?
Clerk, eying me suspiciously: Ehhhhh, claro que s?.
Me, doubtful: Est?s SEGURO que es de lata?
Clerk: S?......
Me, holding the tins closer to his face for inspection: Porque si no es de lata, no lo quiero!
It was weeks later when I heard someone ask for a lata of beans at the colmado that I realized what a dimwit I was!