(informal) To fiddle idly. / (informal) To joke, kid, or play. / (informal) To have a sexual relationship, especially one which is non-commital.

simple past tense and past participle of mess up

In disorder. / (colloquial) Intoxicated, drunk. / (colloquial) Morally reprehensible; clearly and grossly objectionable. / (colloquial) Damaged.

plural of mess kit

A compact set of eating utensils (including plate, cup, utensils) and sometimes cooking pots etc, used in the field by soldiers and by campers.

a tent used to shelter people eating in a group, especially in a military or working setting.

An English dessert of strawberries with cream and pieces of meringue, traditionally served at the prizegiving picnic of Eton College.

(juggling) A pattern that involves crossing and uncrossing the arms while juggling.

(idiomatic) Something of trivial value, especially of immediate value.

(military) mess kit (military uniform)