Writer's Block: Sunday in the park with ____?

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There are so many characters I'd love to spend the day with but I think in the end I'd choose the Doctor (from Doctor Who) and as which version of him I'd choose it'd either be the 4th or his 10th self. I'd really be torn as to which I'd choose and not sure I could pick between those two versions of him.

Oh and if given a chance I'd want to meet all versions of him except his 6th self for sure and possibly his 11th (don't know 11 well enough yet to say one way or another).

ETA: And you know a Sunday afternoon with the Doctor could last forever given he is a Time Lord and has a working TARDIS (oh ooooo I'd love to "meet" the TARDIS as much as I'd love to meet the Doctor) or time machine for those of you who may not watch Doctor Who!