Yes, that always suggests a full nappy to me. Ugh.
I loathe twee abbreviations for nightclothes, like 'jammies' and 'PJs' (thank Christ no one (I think?) says 'nightie' any more) or underwear, or cutesy nicknames for your own breasts, like 'the girls' or 'the puppies', or chocolate or biscuits, or indeed chocolate biscuits ('choccie biccies'). Or 'furbabies'.
Or anything involving 'popping', whether it's 'popping to the shops', 'popping something in the oven' or a 'pop of colour'. It makes me imagine some 50s housewife in a little apron, smiling dementedly in an ad, doped up on Valium.