面(おも)白(しろ)半(はん)分(ぶん) omoshirohanbunなら nara来(こ)な()い()で() konaide欲(ほ)し()い() hoshii。 If you're only half-serious about it, I'd rather you didn't come. conflictrequests~なら (conditional)~ないで (without doing / don't)面白半分 (half for fun)