None of the other tabs seemed correct, so here's what I think Tik Tok sounds like.
Tuning is in drop D.
[ Tab from: https://www.guitartabs.cc/tabs/k/kesha/tik_tok_tab_ver_3.html ]
refriain & intro
E/-----5---------------------II
B/-3-3---3-----3-5-5-6--6-6-oII
G/---------------------------II
D/---------------------------II
A/--------------------------oII
D/---------------------------II
Chorus
E/--------------------------10--II
B/-----------------3-----------oII
G/-----2-----------------/7-----II
D/-0-0---0-----0-0---0----------II
A/-----0-----------------------oII
D/-0-0---0-----0-0---0----------II
