uber comes from the German language. It is a cognate of both Latin super and Greek ýðåñ (hyper). It can mean different things in german but super is most common.
A combination of popular food delivery service ubereats and australian eshay slang word eetswa, often associated with mad cunts and therefore, drugs.
Meaning drugs that are delivered to your doorstep
Adlay 1: oi cunt you spilt the mixyou gotta go get another 2fa from that wickr bloke
Adlay 2: biggest mish cunt, reckon he does ubereetswa?