In the UK a misplaced apostrophe (in a plural or in possessive its) is called a "greengrocers' apostrophe", presumably due to folks in that trade being particularly susceptible to errors in their signs, in turn partially due to the slightly unusual nature of the nouns they are pluralising; "bananas" is slightly teasing you to stick one in, but "mangos" more so as just looks like a Greek island otherwise, unless you opt for the -oes form.