Sneaked or snuck?

I have always sneaked a peep, so to speak, but I discovered this morning (while hanging around the coffee machine waiting my turn) that there are people who have snuck a peep. For me, that’s just weird.

Our investigative scientific natures take over and many theories are proposed.

'Maybe it’s a young person thing', I suggest. Linda quickly puts an end to that theory ... she uses snuck and even she would admit that she is not one of the young ones.

'Ah', says Craig, 'it must be a British versus Kiwi thing ... Kiwis snuck and Brits sneaked'. We all nod approvingly. Along comes Zac, a Yorkshire man if ever there was one. We pounce expectantly.... 'Zac, what’s the past tense of sneak', we all demand. Without a moment’s hesitation, 'snuck', he says ... and another good theory bites the dust.

There’s nothing for it now ... we all head for Google and discover it’s the American influence again for here’s what the wiktionary has to offer:

'The past and past participle snuck is primarily found in North American English, where it originated in the late 19th century as a dialectal form, and where it is still regarded as informal by some; its use appears to be increasing in frequency and acceptability. It is sometimes found in British and Australian English too. (Cf. The Cambridge Guide to English Usage, Merriam-Webster Collegiate Dictionary, Webster's New World College Dictionary).'

Oh oh! Poor Zac is mortified…. ssshhh!