A mere concuss is never sus!

Maybe a little blood and puss.

Don’t be a wuss![1]

[1] This rhyme only works in certain dialects of British English. For most English speakers, it won’t. It’s a bit like that Nickelback song Never Made It As A Wise Man when he rhymes “story” with “sorry”. Nickelback didn’t realize he developed a moat, an uncompetitive advantage, and nobody would be able to sing his wonderful songs. Nobody, except him.