From the Urban Dictionary for the lads and lasses who do not speak the Queens English
WEELET
as in "Weelet!" or "Weelet mate/*name*!"
Comes from the old days of the pit, in the north east of england. Miners would say "wee lad" to the young boys working down the mine. This later, over time, became the unusual word WEELET.
"Weelet marra, hows it ganning?!"
or to express great humour/excitement/joy etc.
"Weeeeelet!!!!"
Just suck it up and shout it loud, make the "let" part ring out. eg. Weeeleeeeet!