Green’s Dictionary of Slang

rotic adj.

[abbr. SE romantic, lit. without the ‘man’]

(US campus) romantic, without the ‘man’ and thus used in a non-sexual context.

[US]Eble Sl. and Sociability 36: Rotic, from romantic, has dropped man from the middle and means ‘romantic without the man’, as in ‘This sunset is very rotic.’.