Have you ever...?

Have you ever waved at someone you thought was waving at you, only to realise they were waving at someone next to you or behind you?

Have you ever tripped in public then been unable to stand up for laughing at yourself?

Have you ever changed seats in a cinema five times because you simply couldn't 'get comfy'?

Have you ever had someone cop a feel on a bus or train?

Have you ever laughed at something you thought was funny, only to realise no-one else though it was funny? Then laughed some more at 'them' for not having an awesome sense of humor?

Have you ever stood in a crowded train and tapped someone on the shoulder just to see them try and figure out who did it?

Have you ever said something completely unrelated to the conversation because you misheard what someone said?