all over (one) like a rash

all over (one) like a rash

Crowding, covering, or in close proximity to one, often in a seductive or flirtatious way. Janet was all over Richard like a rash for the whole night, but you could tell he wasn't interested. The press were all over me like a bad rash the moment I stepped out of the courtroom.
See also: all, like, over, rash