I'll be all over you like a bad suit

HI

koomu(ru), oo(u)

meaning: sustain, cover, wear

Left radical is a radical form of 'clothing' (衣). Right radical is 'skin' (皮), which here acts phonetically to express 'cover'. This character originally meant 'to cover oneself with clothing', i.e., to wear clothes. Its current means are much broader. Henshall suggests as a mnemonic: ''Sustained by clothes covering skin.'

Info from Taka Kanji Database
List of compounds including this character from Risu Dictionary