Been locked inside toilet

Today after lunch, I suddenly feel I had stomachache. I need to go toilet. Factory locks the toilet because it was for customer to use only. When I try to find the key to toilet, they told me someone already in toilet. So I just directly go to toilet. In toilet have 4 rooms. So I went inside one of it. When I done with my stomachache, I realize they had locked me inside the toilet. This is the 1^st time I been lock inside toilet. I tell to Kwan & she laugh on me. Haha…