Rhymes with 'underskirts'
Scots Language Rhymes
blirts
            (Scots for bursts into tears)
chirts
        (Scots for v. sqeezes or squirts)
Scottish-English Rhymes
blurts
                flirts
                hurts
                shirts
                skirts
                spurts
                squirts
                yurts
                overshirts
                undershirts
                underskirts