DH brother and his wife have come over to visit DH and have a catchup before Easter. I came down to say hello etc. DH and his brother looks very similar I went up to whom i pressumed was DH and in tongue and cheek slapped his bum and muttered something like sexy. BIL turned round looking confused and blushing whilst his wife gave me a disapproving look. I'm in the toilet MN mortified and blushing.
Please tell me I'm not the only one whose done something similar. 