撸铁

撸铁	lū tiě	(coll.) to pump iron / to work out
撸	lū	(dialect) to grasp (sth long or cylindrical) and slide the hand up or down / (dialect) to fire (an employee) / (dialect) to reprimand
铁	Tiě	surname Tie
铁	tiě	iron (metal) / arms / weapons / hard / strong / violent / unshakeable / determined / close / tight (slang)