I've been skinny-diping you've been skinny-diping he's been skinny-diping we've been skinny-diping you've been skinny-diping they've been skinny-diping
I'll be skinny-diping you'll be skinny-diping he'll be skinny-diping we'll be skinny-diping you'll be skinny-diping they'll be skinny-diping
Future perfect
I'll have skinny-diped you'll have skinny-diped he'll have skinny-diped we'll have skinny-diped you'll have skinny-diped they'll have skinny-diped
Future perfect continuous
I'll have been skinny-diping you'll have been skinny-diping he'll have been skinny-diping we'll have been skinny-diping you'll have been skinny-diping they'll have been skinny-diping
I'd be skinny-diping you'd be skinny-diping he'd be skinny-diping we'd be skinny-diping you'd be skinny-diping they'd be skinny-diping
Past
I'd have skinny-diped you'd have skinny-diped he'd have skinny-diped we'd have skinny-diped you'd have skinny-diped they'd have skinny-diped
Past continuous
I'd have been skinny-diping you'd have been skinny-diping he'd have been skinny-diping we'd have been skinny-diping you'd have been skinny-diping they'd have been skinny-diping