eyeing up

To notice and/or show a particular interest in something - usually a hot guy/girl, but can also be a meal or anything really.

Dan, check that girl out by the bar, she is totally eyeing you up dude.

Tom's order took so long to get, I caught the fat bastard eyeing up my Big Mac a few times.

ey up

a northerners way of saying hello

ey up cock, fancy a pint?

eye up

to look at someone in a way that shows you are sexually attracted to them

I always eye up hot girls

ey up

'Ey Up' Commonly used by 'Northen' Englishmen, for greetings.

"Ey Up, Joe. Fancy a cheeky Nandos?"

eyes up

what a friend/girl tells you when your looking at a girls ass or tits instead of your friend or her eyes

Ruben- Eyes up John
John- dude i cant help it

Ey up duck

A friendly greeting, often used in the West Midlands and North of England.

Used in typical conversation:

Emma: "Ey up duck, ows yer ma?" (Hello, how is your mother?)
Lee: "Shes alreet" (She is doing well)

One Eye Up

Keeping an eye open. Watching out. Being aware.

And "trust" is a word you seldom hear from us
Hustlers we don't sleep we rest one eye up

-Jay Z, "December 4th"