Lash

to give/ have given someone something or to have asked for it.

Usually this question is asked by a chav who has no actual intention of giving you anything back.
This question is often asked to complete melts who easily get taken advantage of ( easy to mug off )

“Oi Sarah lash me a fag I’ll give u 50p”
“Lash me a pound, I want a cheeseburger”
“Lash me the rest of your drink top beg”
“ I lashed like 5 fags off that girl we saw up town, I didn’t even give her any money for it!”
“Ask Katie to lash you a fag, she says yes to everyone she’s such a melt”