A couple from my Dad, who passed last year:
* "Put that down. You got tinkeritis or something?"
* "Thatsa girl" (said sarcastically to either me or my brother after we performed a relatively simple operation like rebuild a 455 cubic inch Pontiac engine after a rod exploded inside cylinder #3, screwing up the main journals and ripping apart the cam).
* "You wanna knuckle sandwich? Stop yer whinin'. You wanna whine? I'll give you somethin' to whine about."