Dear reader, I feel silly having to say this: but a muscle shirt [sic 'wife-beater'] is not acceptable attire for any dining experience above greasy spoon or fast food dive.
If you see anyone wearing said [sic] 'wife-beater' at a dining establishment that has more than two brands of beer on tap, please pelt the offender with whatever is handy. Tomatoes. Rocks. Old kleenexes. Kitchen sink. Your pick.