What on EARTH did he mean by this?!?

So I swim with this guy. We're pretty good friends. Well I got a camouflage swim suit and he did the *sarcasm* oh so original *end of sarcasm* "Where'd you go?" bit. Well says it over and over and after I walk away he's still talking about it with his best friend (Who is a guy...) and was like "I'll be like, 'Avril, where'd you go?! Oh there you are.'" and he grabbed his friends pecs like they were boobs. Should I be offended...?