A warm man shower is when two men shower together akwardly to conserve water and or power.
"Yeah during hurricane Harvey to conserve water we took a lot of warm man showers"
" Man me and John took the most awkward warm man shower, I can't even look at him"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi