Wumbling: the action of grabbing or gently gripping another's
cheeks, stomach or
bottom, before gently vibrating it from side to side with either your hands or, in exceptional conditions, your
mouth. Colloquial derivative from the English, 'to womble'.
'Y' lay quietly and peacefully on the
bed. Her boyfriend, 'T', blustered stridently through the door before climbing on top of her, pulling up her cotton jumper, before wumbling her belly.
'Crikey Jack, Ieuan's wumbling the neighbours dog again!'
Or from the song:
'Wumble on. Wumble oon. Without, the need to
fart, for you'll never wumble
alone - you'll neever wumble, alone'. (circa 1954).