oh my god, i do this all the time with egg salad. like, my Mother gives me a plate of egg salad and i grab a napkin and eat some and then when she looks away i pretend like im wiping my mouth but actually spitting out the egg salad.
MOM: HERE, TRY THE NOODLES! ME: *GRABS A NAPAKIN* OKAY! ME: THIS IS REALLY GOOD MOM! MOM: GLAD YOU LIKED IT! *TURNS HER HEAD AWAY; ME: *SPITS THE NOODLES INTO THE NAPKIN AND THEN THROWS IT AWAY*; MOM: NEVER REALIZES