BT Pes 117a(39) :מלתא דבדיחותא‏ : a mirthful statement
See the entire entry for bḏīḥū, bḏīḥūṯā n.f. cheerfulness

BT Pes 117a(39) :הא קמי דניפתח הא בתר דנפתח‏ : the one case is before he begins, the other after he begins
See the entire entry for qwmy prep. before